Sample crucible

Abstract

The utility model relates to the technical field of sample test experiments, in particular to a sample crucible, and aims to solve the problem that a powder sample is easily blown out of a crucible to influence the accuracy of a test experiment result during a test experiment of the crucible in the prior art. In order to achieve the purpose, the sample crucible comprises a crucible body, a containing cavity is formed in the crucible body and used for containing a sample, and a crucible opening is formed in the top of the crucible body; the press-fitting structure is detachably connected with the top of the crucible body, and a through hole is formed in the press-fitting structure; and the filtering structure is clamped between the press-fitting structure and the crucible body. According to the sample crucible disclosed by the utility model, the filtering structure is clamped between the press-fitting structure and the crucible body, and gas enters the accommodating cavity from the crucible opening after being blocked and buffered by the filtering structure, so that the problem that the accuracy of a test experiment result is influenced due to the fact that a powder sample is blown out of the crucible is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to sample test experiment technical field, and specifically provide a kind of sample crucible. BACKGROUND

[0002] Crucible becomes the preferred container in the process of sample test experiment such as physical adsorption, chemical adsorption, thermogravimetric analysis due to its high temperature resistance, structural stability and lower reactivity with sample, plays an indispensable role in material research and chemical analysis.

[0003] In the process of sample test experiment, such as high-temperature degassing activation process, physical adsorption analysis process, high-pressure physical adsorption pressure reduction process, gas flow caused by pressure change and gas flow caused by powder sample desorption, and the gas flow is easy to roll up the powder sample with small inner diameter and small density in crucible, even blow to scatter outside the crucible, resulting in affecting the accuracy of test results.

[0004] Correspondingly, the prior art needs a new sample crucible to solve the above problems. UTILITY MODEL CONTENT

[0005] The utility model aims at solving the above technical problem, i.e. solving the problem that powder sample is easy to be blown outside the crucible to affect the accuracy of test results when the crucible in prior art is used for test.

[0006] The utility model provides a kind of sample crucible, the sample crucible includes: crucible body, the accommodating cavity is formed in the crucible body, the accommodating cavity is used to hold sample, the top of the crucible body is equipped with crucible mouth;Pressure mounting structure, the top of the crucible body is detachably connected with the pressure mounting structure, and the pressure mounting structure is equipped with through-hole;Filter structure, the filter structure is clamped between the pressure mounting structure and the crucible body.

[0007] In the case of using the above technical scheme, by clamping filter structure between pressure mounting structure and crucible body, filter structure is fixed at crucible mouth, gas enters from the through-hole of pressure mounting structure, and then enters the accommodating cavity from the crucible mouth after the obstruction and buffering effect of filter structure, airflow is relatively gentle, and sample is not easy to be blown away, and the reaction of gentle gas and sample in accommodating cavity is also relatively gentle, and it is not easy to produce larger gas flow, effectively avoid that sample is blown away, and filter structure is not affected by gas flow and deviated because it is fixed at crucible mouth, effectively ensure the obstruction and buffering effect of airflow, avoid the problem that the accuracy of test results is affected because powder sample is blown outside the crucible.

[0008] In the specific embodiment of the sample crucible, the inner side wall diameter of the top of the crucible body is greater than the inner side wall diameter of the bottom of the crucible body, and a step is formed between the top of the crucible body and the bottom of the crucible body, the press-fitting structure is arranged above the step, and the filter structure is clamped between the bottom wall of the press-fitting structure and the step.

[0009] In the specific embodiment of the sample crucible, the inner side wall diameter of the top of the crucible body is greater than the inner side wall diameter of the bottom of the crucible body, and a step is formed between the top of the crucible body and the bottom of the crucible body, the press-fitting structure is arranged above the step, and the filter structure is clamped between the bottom wall of the press-fitting structure and the step.

[0010] In the specific embodiment of the sample crucible, the outer side wall of the press-fitting structure is connected with the inner side wall of the top of the crucible body.

[0011] In the specific embodiment of the sample crucible, the outer side wall of the press-fitting structure is connected with the inner side wall of the top of the crucible body.

[0012] In the specific embodiment of the sample crucible, the press-fitting structure is a ring-shaped cylinder.

[0013] In the specific embodiment of the sample crucible, the press-fitting structure is a ring-shaped cylinder.

[0014] In the specific embodiment of the sample crucible, the press-fitting structure is a ring-shaped cylinder.

[0015] In the specific embodiment of the sample crucible, the press-fitting structure is a ring-shaped cylinder.

[0016] In the specific embodiment of the sample crucible, the press-fitting structure is a ring-shaped cylinder.

[0017] In the technical scheme, the compression structure and the filter structure are sealed by the sealing gasket, and the powder sample is prevented from entering the space between the compression structure and the filter structure, thereby ensuring the accuracy of the measurement result.

[0018] In the specific embodiment of the sample crucible, the compression structure is a compression cover, the compression cover is arranged on the top of the crucible body, and the through hole is arranged on the top wall of the compression cover.

[0019] In the technical scheme, the compression structure can also be a compression cover, and the compression cover is arranged on the top of the crucible body. In this case, the filter structure is arranged between the top wall of the compression cover and the top wall of the crucible body, thereby providing another embodiment for the installation of the filter structure.

[0020] In the specific embodiment of the sample crucible, the compression structure is threadedly connected to the top of the crucible body.

[0021] In the technical scheme, the compression structure is threadedly connected to the top of the crucible body, thereby achieving detachable connection and providing a sealing effect between the compression structure and the top of the crucible body. The powder sample is prevented from entering the space between the compression structure and the top of the crucible body. In addition, the filter structure can be reliably pressed by the threaded connection, thereby preventing the filter structure from being deviated by external force.

[0022] In the specific embodiment of the sample crucible, the filter structure is one of a stainless steel sintered filter screen, a polytetrafluoroethylene filter membrane, and a stainless steel woven filter screen. In addition, the material of the crucible body is one of stainless steel, aluminum, titanium, copper, ceramic, glass fiber, and quartz.

[0023] In the technical scheme, the stainless steel sintered filter screen, the polytetrafluoroethylene filter membrane, and the stainless steel woven filter screen have the characteristics of high temperature resistance, stable structure, and almost no reaction with the sample, thereby minimizing the influence on the test result. In addition, the size of the filter hole can be adjusted to meet the diversified filtering requirements. The material of the crucible body is one of stainless steel, aluminum, titanium, copper, ceramic, glass fiber, and quartz, thereby enabling the crucible body to have the characteristics of high temperature resistance, stable structure, and almost no reaction with the sample, so as to load the sample for test and minimize the influence on the test.

[0024] In the specific embodiment of the sample crucible, the compression structure is connected with a handle.

[0025] In the technical scheme, the handle is arranged, so that the pressing and assembling structure is convenient to disassemble and assemble, and the sample crucible is convenient to hang on the testing instrument.

[0026] Compared with the prior art, the sample crucible has the advantages that: the filter structure is clamped between the pressing and assembling structure and the crucible body, and is fixed at the crucible opening. The gas enters the through hole of the pressing and assembling structure, and then enters the containing cavity from the crucible opening after the obstruction and buffering of the filter structure. The gas flow is relatively gentle, and the sample is not easy to be blown away. The reaction between the gentle gas and the sample in the containing cavity is also relatively gentle, and a large gas flow is not easy to be generated. The sample is effectively prevented from being blown away. The filter structure is not affected by the gas flow and is not deviated. The obstruction and buffering effect of the gas flow are effectively ensured. The problem that the test result is affected by the powder sample blown out of the crucible is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0027] The preferred embodiments of the present application will be described below with reference to the accompanying drawings, in which:

[0028] Figure 1 is a schematic diagram of the overall structure of one embodiment of the sample crucible of the present application;

[0029] Figure 2 is a schematic diagram of the cross-sectional structure of Figure 1 ;

[0030] Figure 3 is a schematic diagram of the cross-sectional structure of another embodiment of the sample crucible of the present application;

[0031] Explanation of reference signs:

[0032] 1-crucible body, 2-pressing and assembling structure, 3-filter structure, 4-handle, 11-containing cavity, 12-crucible opening, 21-through hole. DETAILED DESCRIPTION

[0033] Some embodiments of the present application will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present application, and are not used to limit the protection scope of the present application. Those skilled in the art can make adjustments according to the needs in order to adapt to specific application occasions.

[0034] It should be noted that in the description of the utility model, the terms "center", "upper", "lower", "left", "right", "front", "back", "top", "bottom", "vertical", "horizontal", "inner", "outer" and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the drawings, which is merely for the convenience of description, and does not indicate or imply that the related devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, in the description of the utility model, "a plurality of" means two or more, unless otherwise specified.

[0035] In addition, it should also be noted that in the description of the utility model, the ordinal numbers "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. In addition, in the description of the utility model, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0036] Based on the background art, the powder sample in the crucible in the prior art is easily blown out of the crucible to affect the accuracy of the test experiment, which aims to fix the filter structure between the pressing structure and the crucible body, the filter structure is fixed at the crucible opening, the gas enters from the through hole of the pressing structure, and then enters the containing cavity from the crucible opening after the obstruction and buffering effect of the filter structure, the gas flow is relatively gentle, and the sample is not easy to be blown away, and the gentle gas and the sample in the containing cavity react relatively gently, and it is not easy to produce a large gas flow, effectively avoiding the sample from being blown away, and the filter structure will not be affected by the gas flow and will not be offset, effectively ensuring the obstruction and buffering effect of the gas flow, avoiding the problem that the powder sample is blown out of the crucible to affect the accuracy of the test experiment.

[0037] Firstly refer to Figure 1 and Figure 2 , Figure 1 is the overall structure schematic diagram of one embodiment of the sample crucible of the utility model, Figure 2 is Figure 1 sectional structure schematic diagram. As Figure 1 and Figure 2As shown, the sample crucible of the utility model includes a crucible body 1, a press-fitting structure 2 and a filtering structure 3, the crucible body 1 is formed with a containing cavity 11 inside, the containing cavity 11 is used for containing samples, the top of the crucible body 1 is provided with a crucible opening 12; the press-fitting structure 2 is detachably connected with the top of the crucible body 1, the press-fitting structure 2 is provided with a through hole 21; the filtering structure 3 is clamped between the press-fitting structure 2 and the crucible body 1. By clamping the filtering structure 3 between the press-fitting structure 2 and the crucible body 1, the filtering structure 3 is fixed at the crucible opening 12, the gas enters from the through hole 21 of the press-fitting structure 2, and then enters the containing cavity 11 from the crucible opening 12 after the obstruction and buffering effect of the filtering structure 3, the airflow is relatively gentle, and the sample is not easy to be blown away, and the gentle gas also reacts relatively gently with the sample in the containing cavity 11, so that a relatively large gas flow is not easy to be generated, thereby effectively avoiding that the sample is blown away, and the filtering structure 3 is not affected by the gas flow and is not deviated due to being fixed at the crucible opening 12, thereby effectively ensuring the obstruction and buffering effect of the airflow, and avoiding the problem that the powder sample is blown out of the crucible and affects the accuracy of the test experimental result.

[0038] Optionally, the filtering structure 3 is one of a stainless steel sintered filter screen, a polytetrafluoroethylene filter membrane and a stainless steel woven filter screen. Since the stainless steel sintered filter screen, the polytetrafluoroethylene filter membrane and the stainless steel woven filter screen have the characteristics of high temperature resistance, stable structure and almost no reaction with the sample, the influence on the test experimental result can be avoided as much as possible, and the size of the filter hole can be adjusted to meet the diversified filtering requirements. The material of the crucible body 1 is one of stainless steel, aluminum, titanium, copper, ceramic, glass fiber and quartz, so that the crucible body 1 has the characteristics of high temperature resistance, stable structure and almost no reaction with the sample, so as to contain the sample for test experiment, and the influence on the test experiment can be avoided as much as possible.

[0039] Optionally, the press-fitting structure 2 is connected with a handle 4, the handle 4 can be formed by bending a steel wire, and the two ends of the handle 4 are fixedly connected with the press-fitting structure 2. The handle 4 can facilitate the disassembly and assembly of the press-fitting structure 2, and can also facilitate the suspension of the sample crucible on the test experimental instrument. The test experimental instrument can be a magnetic suspension balance, a thermal gravimetric analyzer, a true density instrument or other test experimental instruments, which are not limited specifically herein.

[0040] It should be noted that the shape of the crucible body 1 can be a barrel shape or a disc shape, and the outer shape can be any shape such as a circular shape, an oval shape, a square shape and the like, which are not limited specifically herein.

[0041] Continuing to refer to Figure 1 and Figure 2In one possible implementation, the inner wall diameter of the top of the crucible body 1 is larger than the inner wall diameter of the bottom of the crucible body 1, and a step is formed between the top and bottom of the crucible body 1. The pressing structure 2 is disposed above the step, and the filter structure 3 is sandwiched between the bottom wall of the pressing structure 2 and the step.

[0042] Furthermore, the pressing structure 2 is an annular cylinder. The outer wall of the pressing structure 2 is provided with external threads, and the inner wall of the top of the crucible body 1 is provided with internal threads. The pressing structure 2 and the crucible body 1 are connected by external and internal threads, which provides reliable extrusion force for clamping the filter structure 3 between the pressing structure 2 and the crucible body 1. At the same time, it also provides a sealing effect between the outer wall of the pressing structure 2 and the inner wall of the top of the crucible body 1, preventing powder samples from entering. In addition, it also facilitates the assembly and disassembly of the pressing structure 2.

[0043] Optionally, the bottom wall of the press-fit structure 2 is sealed to the filter structure 3, and the filter structure 3 is sealed to the step. Specifically, the sealing effect can be improved by reducing the roughness and / or increasing the flatness and / or increasing the extrusion pressure between the bottom wall of the press-fit structure 2, the top and bottom walls of the filter structure 3, and the step. Alternatively, the sealing effect can be achieved by setting a sealing gasket between the press-fit structure 2 and the filter structure 3, and between the filter structure 3 and the step.

[0044] Those skilled in the art will understand that, although the above combination Figure 1 and Figure 2 The description describes a press-fit structure 2 as an annular cylinder. The outer wall of the press-fit structure 2 has external threads, and the inner wall of the top of the crucible body 1 has internal threads. The press-fit structure 2 and the crucible body 1 are connected by external and internal threads. However, this is not a limitation; the connection between the press-fit structure 2 and the crucible body 1 can also be achieved by providing a buckle or groove on the outer wall of the press-fit structure 2, and a matching groove or buckle at a corresponding position on the inner wall of the top of the crucible body 1, or by providing a buckle or groove on the bottom wall of the press-fit structure 2. The groove, with matching slots or buckles at corresponding positions on the step, enables a detachable connection between the press-fit structure 2 and the crucible body 1 through the engagement of the slots and buckles; in addition, the inner sidewall of the top of the crucible body 1 can be set into a frustum shape that is larger at the top and smaller at the bottom, and the outer sidewall of the press-fit structure 2 can be set into a frustum shape that matches the inner sidewall of the top of the crucible body 1, which can also achieve a detachable connection between the press-fit structure 2 and the crucible body 1; the above adjustments do not deviate from the principle of the present invention and are all within the protection scope of the present invention.

[0045] See below. Figure 3 , Figure 3 This is a cross-sectional structural schematic diagram of another embodiment of the sample crucible of this utility model. (See attached diagram.) Figure 3As shown, as a possible implementation, the press-fitting structure 2 is a press-fitting cover, the press-fitting cover is arranged on the top of the crucible body 1, the through hole 21 is arranged on the top wall of the press-fitting cover, and the filter structure 3 is clamped between the top wall of the press-fitting cover and the top wall of the crucible body 1. Specifically, the inner side wall of the press-fitting cover is provided with an internal thread, the outer side wall of the top of the crucible body 1 is provided with an external thread, and the press-fitting cover and the crucible body 1 are threadedly connected through the internal thread and the external thread.

[0046] It should be noted that the above-mentioned embodiments are only used to illustrate the principle of the present application, and are not intended to limit the protection scope of the present application. Those skilled in the art can adjust the above-mentioned embodiments without departing from the principle of the present application, so that the present application can be applied to more specific application scenarios.

[0047] So far, the technical scheme of the present application has been described in combination with the preferred embodiments shown in the drawings, but those skilled in the art can easily understand that the protection scope of the present application is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to related technical features without departing from the principle of the present application, and the technical scheme after the changes or replacements will fall within the protection scope of the present application.

Claims

1. A sample crucible, characterized by, The sample crucible comprises: a crucible body (1) in which a containing cavity (11) for containing a sample is formed, and a crucible opening (12) is arranged at the top of the crucible body (1); a press-fitting structure (2) detachably connected to the top of the crucible body (1), and a through hole (21) is arranged on the press-fitting structure (2); a filtering structure (3) clamped between the press-fitting structure (2) and the crucible body (1).

2. The sample crucible according to claim 1, wherein the inner side wall diameter of the top of the crucible body (1) is greater than the inner side wall diameter of the bottom of the crucible body (1), and a step is formed between the top of the crucible body (1) and the bottom of the crucible body (1), the press-fitting structure (2) is arranged above the step, and the filtering structure (3) is clamped between the bottom wall of the press-fitting structure (2) and the step.

3. The sample crucible according to claim 2, wherein the outer side wall of the press-fitting structure (2) is connected to the inner side wall of the top of the crucible body (1).

4. The sample crucible according to claim 2, wherein the press-fitting structure (2) is a ring-shaped cylinder.

5. The sample crucible according to claim 2, wherein the contact surfaces between the bottom wall of the press-fitting structure (2) and the filtering structure (3) and between the filtering structure (3) and the step can abut against each other and form a sealed contact.

6. The sample crucible according to claim 2, wherein sealing pads are arranged between the press-fitting structure (2) and the filtering structure (3) and between the filtering structure (3) and the step, respectively.

7. The sample crucible according to claim 1, wherein the press-fitting structure (2) is a press-fitting cover arranged on the top of the crucible body (1), the through hole (21) is arranged on the top wall of the press-fitting cover, and the filtering structure (3) is clamped between the top wall of the press-fitting cover and the top wall of the crucible body (1).

8. The sample crucible according to claim 1, wherein the press-fitting structure (2) is threadedly connected to the top of the crucible body (1).

9. The sample crucible according to claim 1, wherein the filtering structure (3) is one of a stainless steel sintered filter screen, a polytetrafluoroethylene filter membrane, and a stainless steel woven filter screen; and / or the material of the crucible body (1) is one of stainless steel, aluminum, titanium, copper, ceramic, glass fiber, and quartz.

10. The sample crucible according to claim 1, wherein a handle (4) is connected to the press-fitting structure (2).

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