Crucible capable of preventing sample from overflowing

Abstract

The utility model provides a crucible for preventing a sample from overflowing. The crucible comprises a crucible body, a top cover and an isolation assembly, the top cover is detachably arranged on the top of the crucible body, and the isolation assembly is detachably arranged in the crucible body. The isolation assembly comprises an isolation plate and a pickup cross rod, a plurality of flow guide holes are formed in the isolation plate, a connecting ring is arranged on the top face of the isolation plate, the pickup cross rod is arranged in the connecting ring, the two ends of the pickup cross rod are connected with the inner side wall of the connecting ring, and a pickup gap is formed between the bottom face of the pickup cross rod and the top face of the isolation plate. According to the crucible capable of preventing the sample from overflowing, the sample which is not fully combusted in the crucible and ash generated by combustion can be prevented from overflowing outwards, and the result precision of ash detection is improved.

Description

Technical Field

[0001] The utility model belongs to the field of experimental equipment, and particularly relates to a crucible for preventing sample overflow. Background Art

[0002] A crucible is a common cup-shaped vessel in a laboratory, usually used for high-temperature heating of samples. When performing ash content detection of food, an experimenter will put a sample to be tested into the crucible for heating, so that the sample burns. During the burning process, the water and organic components in the sample will escape outward along with the burning process, and the inorganic components will remain inside the crucible to form ash, which is convenient for the experimenter to collect and perform subsequent analysis.

[0003] However, since an upward air flow is generated during the burning process of the sample, and the weight of the residue inside the crucible is usually low, when using a traditional crucible for sample burning, the sample and the residue are likely to overflow outward. In this way, it will not only affect the accuracy of ash content detection, but also easily damage the internal environment of the laboratory. Content of the Utility Model

[0004] In view of this, the utility model aims to provide a crucible for preventing sample overflow to solve the above technical problems.

[0005] To achieve the above object, the technical solution of the utility model is realized as follows:

[0006] A crucible for preventing sample overflow, comprising: a crucible body, a top cover and an isolation component. The top cover is detachably arranged on the top of the crucible body. An accommodation cavity and an installation cavity are arranged inside the crucible body. The bottom end of the installation cavity is communicated with the top end of the accommodation cavity, and the inner diameter of the installation cavity is larger than that of the accommodation cavity. The isolation component is detachably arranged inside the crucible body. The isolation component includes an isolation plate and a picking cross bar. The outer diameter of the isolation plate is equal to the inner diameter of the installation cavity, and a plurality of diversion holes are arranged on the isolation plate. A connection ring is arranged on the top surface of the isolation plate. The picking cross bar is arranged inside the connection ring. Both ends of the picking cross bar are connected to the inner side wall of the connection ring, and a picking gap is formed between the bottom surface of the picking cross bar and the top surface of the isolation plate.

[0007] Furthermore, a bearing column is arranged on the isolation plate. The top end of the bearing column is connected to the picking cross bar, and an installation hole is arranged on the bearing column. The isolation component includes a connecting rod and an intercepting net. The connecting rod is arranged inside the installation hole in a liftable manner, and the intercepting net is arranged at the bottom end of the connecting rod.

[0008] Further, the mounting hole includes a receiving section, a connecting section, and a threaded section that are sequentially connected from top to bottom. The inner diameter of the receiving section is larger than that of the connecting section, and the inner diameter of the connecting section is larger than that of the threaded section. The connecting rod includes a threaded rod and a limiting rod. The threaded rod is disposed at the top end of the limiting rod, the interception net is disposed at the bottom end of the limiting rod, and the threaded rod is placed inside the threaded section. The outer diameter of the limiting rod is larger than the inner diameter of the threaded section.

[0009] Further, the isolation assembly further includes an operating sleeve. The operating sleeve is movably disposed inside the mounting hole. A limiting strip is provided on the inner side wall of the operating sleeve. A limiting groove for receiving the limiting strip is provided on the side wall of the threaded rod, and the length direction of the limiting groove is parallel to the length direction of the threaded rod.

[0010] Further, a limiting piece is provided at the top end of the threaded rod, and the outer diameter of the limiting piece is larger than the inner diameter of the threaded section. An avoidance groove is provided on the side wall of the limiting piece, and the avoidance groove is communicated with the limiting groove.

[0011] Further, the operating sleeve includes an operating section and a positioning section. The operating section is disposed at the top end of the positioning section. The outer diameter of the operating section is equal to the inner diameter of the receiving section, and the axial length of the operating section is greater than the axial length of the receiving section. The outer diameter of the positioning section is equal to the inner diameter of the connecting section, and the axial length of the operating sleeve is greater than the distance from the picking cross bar to the top cover.

[0012] Further, a positioning ring groove is provided on the bottom surface of the top cover, and the inner diameter of the positioning ring groove is equal to the outer diameter of the positioning section.

[0013] Further, picking ears are provided on the top surface of the top cover.

[0014] Compared with the prior art, the crucible for preventing sample overflow of the present utility model has the following advantages:

[0015] (1) The crucible for preventing sample overflow of the present utility model can intercept the sample inside the crucible body through the isolation plate. When heating and burning the sample, the diversion holes on the isolation plate can facilitate the outward escape of water vapor and organic components, and intercept the unburned sample and the ash generated by the sample combustion, thereby improving the accuracy of ash detection. In addition, a connecting ring and a picking cross bar are further provided on the isolation plate of the present device. After the present device is used up, the experimenter can clamp the picking cross bar with tools such as tweezers to facilitate removing the isolation assembly from the crucible body, thereby improving the operation convenience of the present device.

[0016] (2) For the crucible for preventing sample spillage according to the present utility model, the isolation assembly further includes a connecting rod and an intercepting net. Before use, the experimenter can drive the connecting rod to rise and fall according to the volume of the sample inside the crucible body, so as to adjust the position of the intercepting net, so that the intercepting net stays above the sample. When heating and burning the sample, the intercepting net can obstruct the upward airflow and intercept the ash moving with the upward airflow, thereby further improving the sample anti-spillage effect of the device.

[0017] (3) For the crucible for preventing sample spillage according to the present utility model, the isolation assembly further includes an operating sleeve. During use, the experimenter can drive the connecting rod to rise and fall by rotating the operating sleeve, thereby improving the convenience of using the device. At the same time, after completing the lifting movement of the connecting rod, the experimenter can also insert the operating sleeve into the installation hole with the positioning section facing upward, so as to support the top cover by means of the positioning section, so that a gap is formed between the top cover and the crucible body, facilitating the entry of external air into the crucible and improving the combustion effect of the sample. Description of the Drawings

[0018] The drawings forming a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0019] Figure 1 is an exploded view of the crucible for preventing sample spillage according to the embodiment of the present utility model;

[0020] Figure 2 is a cross-sectional view of the crucible for preventing sample spillage according to the embodiment of the present utility model (the operating sleeve is inserted into the installation hole with the positioning section facing downward);

[0021] Figure 3 is a cross-sectional view of the crucible for preventing sample spillage according to the embodiment of the present utility model (the operating sleeve is inserted into the installation hole with the positioning section facing upward);

[0022] Figure 4 is a schematic structural view of the isolation plate, connecting ring and picking cross bar according to the embodiment of the present utility model;

[0023] Figure 5 is a schematic structural view of the connecting rod, intercepting net and operating sleeve according to the embodiment of the present utility model;

[0024] Figure 6 is a schematic bottom surface structure view of the top cover according to the embodiment of the present utility model.

[0025] Description of the Reference Numerals:

[0026] 1 - Crucible body; 11 - Accommodating cavity; 12 - Mounting cavity; 2 - Top cover; 21 - Positioning ring groove; 22 - Pick-up ear; 3 - Partition plate; 31 - Flow guiding hole; 32 - Connecting ring; 4 - Pick-up cross bar; 5 - Bearing column; 61 - Accommodating section; 62 - Connecting section; 63 - Threaded section; 71 - Threaded rod; 711 - Limit groove; 72 - Limit rod; 73 - Limit piece; 731 - Avoidance groove; 8 - Intercepting net; 91 - Operating section; 92 - Positioning section; 93 - Limit strip. Detailed implementation mode

[0027] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0028] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is 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 to the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0029] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "mount", "connected", "connection" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

[0030] The present invention will be described in detail below with reference to the drawings and in combination with embodiments.

[0031] A crucible for preventing sample overflow, the structure of which can be composed of Figures 1-6For illustration. In this embodiment, the crucible for preventing sample overflow includes: a crucible body 1, a top cover 2, and an isolation component, where the top cover 2 is detachably arranged on the top of the crucible body 1, and the isolation component is detachably arranged inside the accommodation cavity 11. During use, the crucible body 1 can hold the sample to be tested, so as to facilitate heating and burning of the sample to be tested, and the isolation component can intercept the sample to be tested and the ash generated by the combustion of the sample during the combustion process of the sample to be tested, so as to avoid affecting the accuracy of the ash detection result.

[0032] Specifically, an accommodation cavity 11 and an installation cavity 12 are provided inside the crucible body 1, where the bottom end of the installation cavity 12 is communicated with the top end of the accommodation cavity 11, and the inner diameter of the installation cavity 12 is larger than the inner diameter of the accommodation cavity 11. The isolation component includes an isolation plate 3, the outer diameter of the isolation plate 3 is equal to the inner diameter of the installation cavity 12, and a plurality of diversion holes 31 are provided on the isolation plate 3. During use, the experimenter can remove the top cover 2 and the isolation component to facilitate putting the sample to be tested into the accommodation cavity 11. Subsequently, the isolation plate 3 is installed into the installation cavity 12, and the isolation plate 3 is supported by the step surface formed between the inner side wall of the accommodation cavity 11 and the inner side wall of the installation cavity 12 to prevent the isolation plate 3 from moving abnormally inside the installation cavity 12. Next, the experimenter can transfer the crucible body 1 above a heating device (such as a blowtorch, etc.) to heat the crucible body 1, so that the sample to be tested inside the crucible body 1 starts to burn due to heating. At this time, the water vapor and organic components in the sample will escape outward along the diversion holes 31, and the unburned sample and the ash generated by combustion will be intercepted by the isolation plate 3, so that the ash detection result of the sample has good accuracy.

[0033] Correspondingly, since this device has a relatively high temperature after use, in order to facilitate the experimenter to remove the isolation plate 3 from the crucible body, the isolation component further includes a picking crossbar 4. Specifically, a connecting ring 32 should be provided on the top surface of the isolation plate 3, the picking crossbar 4 is arranged inside the connecting ring 32, both ends of the picking crossbar 4 are connected to the inner side wall of the connecting ring 32, and a picking gap is formed between the bottom surface of the picking crossbar 4 and the top surface of the isolation plate 3. After the sample combustion is completed, the experimenter can clamp the picking crossbar 4 with tools such as tweezers to remove the isolation plate 3 outside the crucible body 1, which is convenient for collecting and analyzing the ash remaining in the accommodation cavity 11.

[0034] As an optional implementation manner of this embodiment, in order to facilitate the experimenter to disassemble and assemble the top cover 2, a picking ear 22 can be provided on the top surface of the top cover 2 to facilitate picking up and transferring the top cover 2 through the picking ear 22.

[0035] During actual use, since the combustion of the sample generates an upward airflow, when the sample to be tested is a food with a relatively light weight (such as ground cereal powder), the unburned sample and the ash generated by the combustion of the sample will be more likely to overflow outward along with the upward airflow. Therefore, to improve the interception effect of this device, the isolation component in this embodiment may include a connecting rod and an interception net 8.

[0036] As Figure 2 , Figure 4 and Figure 5 shown, for the convenience of installing the connecting rod and the interception net 8, a bearing column 5 is provided on the isolation plate 3. The top end of the bearing column 5 is connected to the pickup cross bar 4, and an installation hole is provided on the bearing column 5. During assembly, the experimenter can set the connecting rod to be liftable inside the installation hole, and set the interception net 8 at the bottom end of the connecting rod, so as to intercept above the sample by means of the interception net 8, thereby strengthening the interception effect of the isolation component. Correspondingly, since the connecting rod can move up and down inside the installation hole, the experimenter can also flexibly adjust the height of the interception net 8 according to the volume of the sample to be tested inside the accommodation cavity 11, so as to improve the adaptability of this device to different experimental requirements.

[0037] To achieve the lifting movement of the connecting rod inside the installation hole, the installation hole may include an accommodation section 61, a connection section 62, and a threaded section 63 that are sequentially connected from top to bottom. The inner diameter of the accommodation section 61 is larger than that of the connection section 62, and the inner diameter of the connection section 62 is larger than that of the threaded section 63. Correspondingly, the connecting rod may include a threaded rod 71 and a limiting rod 72. The threaded rod 71 is arranged at the top end of the limiting rod 72, the interception net 8 is arranged at the bottom end of the limiting rod 72, and the threaded rod 71 is placed inside the threaded section 63. The outer diameter of the limiting rod 72 is larger than the inner diameter of the threaded section 63. When it is necessary to adjust the height of the interception net 8, the experimenter can drive the connecting rod to rotate, so that the connecting rod moves along the axis direction of the installation hole under the action of the threaded rod 71 and the threaded section 63, and then the interception net 8 is adjusted to an appropriate height position. In addition, since the outer diameter of the limiting rod 72 is larger than the inner diameter of the threaded section 63, the limiting rod 72 can also limit the maximum upward travel of the connecting rod to prevent the interception net 8 from colliding with the isolation plate 3.

[0038] Optionally, to improve the operation convenience of this device, the isolation component further includes an operation sleeve, as Figure 2 and Figure 5As shown, the operating sleeve is movably arranged inside the mounting hole. A limiting strip 93 is provided on the inner side wall of the operating sleeve, and a limiting groove 711 for accommodating the limiting strip 93 is provided on the side wall of the threaded rod 71. The length direction of the limiting groove 711 is parallel to the length direction of the threaded rod 71. When it is necessary to drive the connecting rod to move up and down inside the mounting hole, the experimenter can drive the operating sleeve to rotate, so that the connecting rod rotates following the operating sleeve through the cooperation of the limiting strip 93 and the limiting groove 711. Since the length direction of the limiting groove 711 is parallel to the length direction of the threaded rod 71, when the connecting rod moves up and down due to rotation, the limiting strip 93 will slide inside the limiting groove 711 to prevent the operating sleeve from obstructing the up and down movement of the connecting rod.

[0039] In addition, to facilitate the limitation of the maximum downward stroke of the connecting rod, a limiting piece 73 with an outer diameter larger than the inner diameter of the threaded section 63 can also be provided at the top end of the threaded rod 71. As Figure 3 shown, when the connecting rod descends to the limit position, the limiting piece 73 will be in contact with the bottom end face of the connecting section 62, so as to axially limit the connecting rod and prevent the connecting rod from separating from the mounting hole. Correspondingly, to ensure that the limiting strip 93 smoothly enters the limiting groove 711, an avoidance groove 731 communicating with the limiting groove 711 should also be provided on the side wall of the limiting piece 73 to avoid the improper influence of the existence of the limiting piece 73 on the cooperation effect between the operating sleeve and the connecting rod.

[0040] It should be noted that in this embodiment, the operating sleeve can be used not only to drive the connecting rod to rotate, but also to support the top cover 2 when the sample burns, so as to form a gap between the top cover 2 and the crucible body 1, facilitate the entry of external air into the crucible body 1, improve the combustion effect of the sample, and can also shield the crucible body 1 to a certain extent through the top cover 2, further improving the ability of the device to prevent the sample from overflowing.

[0041] To achieve the above purpose, the axial length of the operating sleeve is greater than the distance between the picking cross bar 4 and the top cover 2. As Figure 5 shown, the operating sleeve should include an operating section 91 and a positioning section 92. The operating section 91 is arranged at the top end of the positioning section 92. The outer diameter of the operating section 91 is equal to the inner diameter of the accommodating section 61, and the axial length of the operating section 91 is greater than the axial length of the accommodating section 61. The outer diameter of the positioning section 92 should be equal to the inner diameter of the connecting section 62. When the operating sleeve is inserted into the mounting hole with the positioning section 92 facing downwards, as Figure 2 shown, since the axial length of the operating section 91 is greater than the axial length of the accommodating section 61, the top end of the operating section 91 will expose the picking cross bar 4, thus facilitating the experimenter to drive the operating sleeve to rotate. When the operating sleeve is inserted into the mounting hole with the positioning section 92 facing upwards, as Figure 3As shown, since the axial length of the operating sleeve is greater than the distance between the picking crossbar 4 and the top cover 2, the operating sleeve will lift the top cover 2 to form a gap between the top cover 2 and the crucible body 1.

[0042] As another alternative embodiment of this embodiment, to improve the stability of the top cover 2 in the state as Figure 3 shown, as Figure 6 shown, a positioning ring groove 21 with an inner diameter equal to the outer diameter of the positioning section 92 may be provided on the bottom surface of the top cover 2. When the operating sleeve lifts the top cover 2, the positioning section 92 will be inserted into the positioning ring groove 21 to prevent the top cover 2 from falling.

[0043] The effects of the above solution will be described below:

[0044] This embodiment provides a crucible for preventing sample spillage, which can intercept unburned samples and ash generated by sample combustion through a partition plate, improving the accuracy of ash detection. Secondly, the device can also improve the interception effect through an interception net and can flexibly adjust the height of the interception net according to the volume of the sample. In addition, the device can also select the installation posture of the operating sleeve according to actual needs to facilitate driving the connecting rod through the operating sleeve or jacking up the top cover through the operating sleeve.

[0045] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A crucible for preventing sample overflow, characterized in that: include: A crucible body (1), a top cover (2) and an isolation assembly, wherein the top cover (2) is detachably arranged on the top of the crucible body (1), a receiving cavity (11) and an installation cavity (12) are arranged inside the crucible body (1), the bottom end of the installation cavity (12) is connected to the top end of the receiving cavity (11), and the inner diameter of the installation cavity (12) is larger than the inner diameter of the receiving cavity (11); the isolation assembly is detachably arranged inside the crucible body (1), and the isolation assembly includes an isolation The invention relates to a separation plate (3) and a picking cross bar (4); the outer diameter of the separation plate (3) is equal to the inner diameter of the installation cavity (12), and a plurality of guide holes (31) are provided on the separation plate (3); a connecting ring (32) is provided on the top surface of the separation plate (3), and the picking cross bar (4) is arranged inside the connecting ring (32), and both ends of the picking cross bar (4) are connected to the inner side wall of the connecting ring (32), and a picking gap is formed between the bottom surface of the picking cross bar (4) and the top surface of the separation plate (3).

2. A crucible for preventing sample overflow according to claim 1, characterized in that: The isolation plate (3) is provided with a bearing column (5), the top end of the bearing column (5) is connected to the picking cross bar (4), and a mounting hole is provided on the bearing column (5); the isolation assembly comprises a connecting rod and an intercepting net (8), the connecting rod is liftably arranged inside the mounting hole, and the intercepting net (8) is arranged at the bottom end of the connecting rod.

3. A crucible for preventing sample overflow according to claim 2, characterized in that: The mounting hole comprises a receiving section (61), a connecting section (62) and a threaded section (63) which are connected in sequence from top to bottom, the inner diameter of the receiving section (61) is larger than the inner diameter of the connecting section (62), and the inner diameter of the connecting section (62) is larger than the inner diameter of the threaded section (63); the connecting rod comprises a threaded rod (71) and a limiting rod (72), the threaded rod (71) is arranged at the top end of the limiting rod (72), the intercepting net (8) is arranged at the bottom end of the limiting rod (72), and the threaded rod (71) is placed inside the threaded section (63), and the outer diameter of the limiting rod (72) is larger than the inner diameter of the threaded section (63).

4. A crucible for preventing sample overflow according to claim 3, characterized in that: The isolation assembly also includes an operating sleeve, which is movably arranged inside the mounting hole, a limiting strip (93) is provided on the inner side wall of the operating sleeve, and a limiting groove (711) for accommodating the limiting strip (93) is provided on the side wall of the threaded rod (71), and the length direction of the limiting groove (711) is parallel to the length direction of the threaded rod (71).

5. A crucible for preventing sample overflow according to claim 4, characterized in that: A limiting plate (73) is provided at the top end of the threaded rod (71), and the outer diameter of the limiting plate (73) is greater than the inner diameter of the threaded section (63). An avoidance groove (731) is provided on the side wall of the limiting plate (73), and the avoidance groove (731) is communicated with the limiting groove (711).

6. A crucible for preventing sample overflow according to claim 4, characterized in that: The operating sleeve comprises an operating section (91) and a positioning section (92); the operating section (91) is arranged at the top end of the positioning section (92); the outer diameter of the operating section (91) is equal to the inner diameter of the accommodating section (61), and the axial length of the operating section (91) is greater than the axial length of the accommodating section (61); the outer diameter of the positioning section (92) is equal to the inner diameter of the connecting section (62), and the axial length of the operating sleeve is greater than the distance between the picking cross bar (4) and the top cover (2).

7. A crucible for preventing sample overflow according to claim 6, characterized in that: A positioning ring groove (21) is provided on the bottom surface of the top cover (2), and the inner diameter of the positioning ring groove (21) is equal to the outer diameter of the positioning section (92).

8. The crucible for preventing sample overflow according to claim 1, characterized in that: A picking ear (22) is provided on the top surface of the top cover (2).

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