Crucible for pre-melting a sample

Abstract

The utility model discloses a kind of for pre-melting sample crucible, including crucible, the one end of crucible is provided with sealing assembly, crucible cover and the surface of crucible are provided with auxiliary assembly, by the sealing assembly of being set in crucible, can form a reliable barrier under high temperature condition, successfully block gas leakage, ensure pre-melting process gas stability, prevent sample component oxidation or volatilization, it is favorable to promote experimental result accuracy, simultaneously, the auxiliary assembly of being set in crucible cover and crucible, the stability between crucible cover and crucible is enhanced, avoid the loosening of crucible cover due to temperature fluctuation or artificial operation, guarantee pre-melting process continues stably, reduce experiment interruption risk, improve experimental safety and reliability.

Description

Technical Field

[0001] This utility model relates to the field of crucible technology, and more specifically, to a crucible for pre-melting samples. Background Technology

[0002] In experiments such as chemical analysis and metallurgical analysis, it is often necessary to pre-melt the samples for subsequent analysis and testing. High-temperature experiments cannot do without the crucible, a key vessel that can withstand high temperatures and provide a stable environment for the pre-melting of the samples.

[0003] However, in high-temperature environments, the sealing of crucibles is often difficult to guarantee, which can easily lead to gas leakage, affecting the pre-melting effect and the accuracy of experimental results. It may even lead to the loss of sample components. At the same time, crucibles lack effective means of fixing the lid during use, which can easily cause the lid to loosen due to temperature changes or improper operation, affecting the stability of the pre-melting process.

[0004] There are currently no effective solutions to the problems in the relevant technologies. Utility Model Content

[0005] To address the problems in related technologies, this utility model proposes a crucible for pre-melting samples. This solves the problems that existing crucibles often have difficulty in ensuring sealing under high-temperature environments, which can easily lead to gas leakage, affecting the pre-melting effect and the accuracy of experimental results. Furthermore, the crucible lacks an effective means of fixing the lid during use, which can easily cause the lid to loosen due to temperature changes or improper operation, affecting the stability of the pre-melting process.

[0006] Therefore, the specific technical solution adopted by this utility model is as follows:

[0007] A crucible for pre-melting samples includes a crucible with a sealing assembly at one end. The sealing assembly includes a threaded groove inside the crucible, a crucible cover threadedly connected inside the threaded groove, a sealing groove on one side of the crucible cover, a sealing block in contact inside the sealing groove, and one side of the sealing block connected to the crucible. An auxiliary assembly is provided on the surface of the crucible cover and the crucible.

[0008] Furthermore, in order to better ensure the tightness between the lid and the crucible, the auxiliary components include multiple auxiliary blocks on the surface of the lid, one end of each auxiliary block is in contact with a limiting seat, one side of the limiting seat is connected to the crucible, and multiple auxiliary holes are opened on opposite sides of the interior of the limiting seat. Elastic plungers are installed inside the auxiliary holes, and one end of each elastic plunger is connected to a limiting block.

[0009] Furthermore, in order to better remove or move the crucible as a whole, a graphite belt is provided on the surface of the crucible, and multiple removal rings are provided on the graphite belt.

[0010] Furthermore, to better improve the stability of the crucible placement, a limiting groove is provided below the graphite belt, and a placement rack is installed inside the limiting groove.

[0011] Furthermore, in order to better improve the sealing between the crucible and the lid, an expanded graphite sealing ring is installed inside the sealing groove, with one side of the expanded graphite sealing ring in contact with the sealing block.

[0012] Furthermore, in order to better transport the lid or the entire crucible, a lifting ring is provided on the lid.

[0013] The beneficial effects of this utility model are as follows:

[0014] (1) By setting a sealing component in the crucible, a reliable barrier can be formed under high temperature conditions, successfully blocking gas leakage, ensuring gas stability during the pre-melting process, preventing sample components from oxidizing or volatilizing, which is conducive to improving the accuracy of experimental results. At the same time, the auxiliary components set in the lid and crucible enhance the stability between the crucible and lid, avoid the lid from loosening due to temperature fluctuations or human operation, ensure the continuous stability of the pre-melting process, reduce the risk of experimental interruption, and improve experimental safety and reliability.

[0015] (2) The removal ring set on the graphite waist provides a stable point of force for crucible removal, effectively preventing the crucible from falling off during sampling. At the same time, the lifting ring set on the cover facilitates the overall lifting and transportation of the crucible. Especially in high-temperature environments, operators can use tools to hook the lifting ring or hold the removal ring to achieve safe transfer and movement of the crucible, avoiding direct contact with the high-temperature crucible and causing burns. This greatly improves the convenience and safety of operation, making the pre-melted sample process smoother and more efficient. Meanwhile, the expanded graphite sealing ring set in the sealing groove can fully expand in high-temperature environments, tightly fit the sealing block, and effectively fill the gaps between them. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a crucible for pre-melting a sample according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of a limiting groove and a placement rack structure for a crucible used for pre-melting samples according to an embodiment of the present invention;

[0019] Figure 3This is a schematic diagram of a sealing assembly structure for a crucible used for pre-melting samples according to an embodiment of the present invention;

[0020] Figure 4 This is a partial structural diagram of a sealing assembly and auxiliary assembly of a crucible for pre-melting a sample according to an embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the auxiliary component structure of a crucible for pre-melting a sample according to an embodiment of the present invention.

[0022] In the picture:

[0023] 1. Crucible; 2. Sealing assembly; 201. Threaded groove; 202. Crucible lid; 203. Sealing groove; 204. Sealing block; 3. Auxiliary assembly; 301. Auxiliary block; 302. Restricting seat; 303. Elastic plunger; 304. Restricting block; 4. Graphite belt; 5. Removal ring; 6. Restricting groove; 7. Placement rack; 8. Expanded graphite sealing ring; 9. Lifting ring. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1:

[0026] like Figures 1-4 As shown, a crucible for pre-melting samples according to an embodiment of the present invention includes a crucible 1, which is a container for melting, heating or processing substances that only react at extremely high temperatures. The crucible 1 is cylindrical in shape, with a diameter of 8-10 cm and a height of 6-8 cm. A sealing component 2 is provided at one end of the crucible 1. The sealing component 2 includes a threaded groove 201 inside one end of the crucible 1 for connecting a lid 202. The depth of the threaded groove 201 is about 0.2-0.3 cm from the bottom of the crucible body and the top of the crucible. The lid 202 is threaded inside the threaded groove 201 for covering the mouth of the crucible 1. The lid 202 has a major diameter of 12-15 cm and a height of 0.4-0.6 cm, a minor diameter of 10-12 cm and a height of 0.2-0.3 cm, and a lifting ring 9 is provided on the lid 202 for lifting the entire crucible 1 and lid 202. The lid 202 and the lifting ring 9 are integrated.

[0027] A sealing groove 203 is provided on one side of the crucible lid 202 for installing an expanded graphite sealing ring 8. The expanded graphite sealing ring 8 is installed inside the sealing groove 203 to improve tightness. In actual use, the expanded graphite sealing ring 8 can be made of other materials. One side of the expanded graphite sealing ring 8 contacts the sealing block 204. The sealing groove 203 contacts the sealing block 204 to improve sealing. One side of the sealing block 204 is connected to the crucible 1.

[0028] A graphite belt 4 is provided on the surface of the crucible 1 to facilitate sampling and prevent the crucible from falling off during sampling. Two extraction rings 5 ​​are provided on the graphite belt 4 for removing the entire crucible 1. A limiting groove 6 is provided below the graphite belt 4 to restrict the placement of the crucible 1. A placement rack 7 is provided inside the limiting groove 6 to improve the stability of the crucible 1. The shapes of the limiting groove 6 and the placement rack 7 can be adjusted according to the actual situation.

[0029] Example 2:

[0030] like Figures 1-2 , Figure 4 , Figure 5 As shown, according to an embodiment of the present invention, a crucible for pre-melting samples has an auxiliary component 3 on the surface of the crucible cover 202 and the crucible 1. The auxiliary component 3 includes two auxiliary blocks 301 on the surface of the crucible cover 202 for auxiliary fixing of the crucible cover 202. One end of the auxiliary block 301 contacts a limiting seat 302 for limiting the auxiliary block 301. One side of the limiting seat 302 is connected to the crucible 1. Four auxiliary holes are opened on opposite sides inside the limiting seat 302. An elastic plunger 303 is installed inside the auxiliary holes for adaptive adjustment of the limiting block 304. One end of the elastic plunger 303 is connected to the limiting block 304 for limiting the auxiliary block 301.

[0031] The elastic plunger 303, graphite belt 4, and expanded graphite sealing ring 8 are existing technologies and will not be described in detail. The specific model and specifications need to be selected and determined according to the actual specifications of the device.

[0032] According to Examples 1 and 2, experimental sample compositions were first prepared, followed by pre-melting treatment. The first experiment was conducted without a cap, while the second experiment was conducted with a cap. Using the prepared experimental sample compositions as a baseline, the changes in chemical composition after the experiments with and without a cap were compared. The statistical results are shown in the table below:

[0033] Table 1. Sample Composition

[0034]

[0035] Table 2. Sample Composition

[0036]

[0037] Table 1 shows that the chemical composition of blast furnace slag remained essentially unchanged before and after the experiment (relative change rate within 5%). Table 2 shows that the chemical composition of blast furnace slag remained essentially unchanged before and after the experiment (relative change rate within 11%). The tables indicate that using the crucible in this embodiment, compared to using a traditional crucible for pre-melting the sample, reduced the loss rate of chemical composition by 6 percentage points, improving the accuracy of the experimental results and reducing experimental costs.

[0038] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0039] In summary, with the help of the above-mentioned technical solution of this utility model, when the sample is placed in the crucible 1, the external thread of the crucible cover 202 is screwed into the threaded groove 201 on the inner side of the top of the crucible 1, which can provide a first mechanical seal between the crucible cover 202 and the crucible 1. At the same time, when the crucible cover 202 is screwed in place, the auxiliary block 301 provided on the crucible cover 202 contacts the limiting seat 302 provided on the crucible 1. The elastic plunger 303 provided in the limiting seat 302 pushes the limiting block 304 to extend, so that the limiting block 304 restricts the auxiliary block 301. This can prevent the crucible cover 202 from rotating in the opposite direction and loosening due to vibration or accidental contact, and avoid the crucible cover 202 from loosening due to temperature fluctuations.

[0040] The side of the crucible lid 202 facing the inside of the crucible 1 has an annular sealing groove 203 and an expanded graphite sealing ring 8. When the crucible 1 is heated, the expanded graphite sealing ring 8 expands significantly in volume at high temperature due to its material properties (high expansion coefficient). The expanded expanded graphite sealing ring 8 tightly fills the sealing groove 203 and presses strongly against the annular sealing block 204 fixed at the port of the crucible 1 to form a second layer. This helps to block the gas (external air entering or internal protective gas / volatiles escaping), ensuring the stability of the atmosphere in the pre-melting chamber and preventing the sample from oxidizing or key components from volatilizing.

[0041] When it needs to be removed, the crucible 1 is removed via the removal ring 5 on the graphite belt 4, which allows the operator to easily remove it using a hook. This provides a safe point of leverage and facilitates stable handling of the entire crucible 1 system at high temperatures, preventing slippage. The lifting ring 9 on the top of the lid 202 can be used for lifting and transporting the entire crucible 1 (e.g., using a hook), which also improves the safety of high-temperature operations. After removal, the entire crucible 1 comes into contact with the matching placement rack 7 via the limiting groove 6 below the graphite belt 4, which provides a stable support base for the crucible 1 and prevents it from tipping over.

[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A crucible for pre-melting samples, comprising a crucible (1), characterized in that, A sealing component (2) is provided at one end of the crucible (1). The sealing component (2) includes a threaded groove (201) inside one end of the crucible (1), a lid (202) is threaded inside the threaded groove (201), a sealing groove (203) is provided on one side of the lid (202), a sealing block (204) is in contact inside the sealing groove (203), and one side of the sealing block (204) is connected to the crucible (1). An auxiliary component (3) is provided on the surface of the lid (202) and the crucible (1).

2. The crucible for pre-melting samples according to claim 1, characterized in that, The auxiliary component (3) includes a crucible lid (202) with a plurality of auxiliary blocks (301) on its surface. One end of the auxiliary block (301) contacts a limiting seat (302). One side of the limiting seat (302) is connected to the crucible (1). The interior of the limiting seat (302) has a plurality of auxiliary holes on opposite sides. An elastic plunger (303) is installed inside the auxiliary hole. One end of the elastic plunger (303) is connected to a limiting block (304).

3. A crucible for pre-melting samples according to claim 2, characterized in that, A graphite belt (4) is provided on the surface of the crucible (1), and multiple take-out rings (5) are provided on the graphite belt (4).

4. A crucible for pre-melting samples according to claim 3, characterized in that, A limiting groove (6) is provided below the graphite belt (4), and a placement rack (7) is provided inside the limiting groove (6).

5. A crucible for pre-melting samples according to claim 4, characterized in that, An expanded graphite sealing ring (8) is installed inside the sealing groove (203), and one side of the expanded graphite sealing ring (8) is in contact with the sealing block (204).

6. A crucible for pre-melting samples according to claim 5, characterized in that, A lifting ring (9) is provided on the lid (202).

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