Combined crucible easy to clean
By designing a detachable modular crucible, the difference in thermal expansion coefficients between the inner and outer crucibles is used to achieve a fixed connection, which facilitates separation and cleaning after cooling. This solves the problem of dead corners in crucible cleaning and improves cleaning efficiency and convenience.
Patent Information
- Application Number
- CN202422807245.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-18
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-11-18
AI Technical Summary
Existing crucibles have dead corners at the bottom due to their structure, making them difficult for cleaning tools to reach, especially for deeper crucibles, resulting in low cleaning efficiency.
Design a detachable modular crucible where the inner and outer crucibles are fixedly connected by the difference in their coefficients of thermal expansion and can be naturally separated after cooling for easy individual cleaning. The inner crucible covers the dead corners of the outer crucible to prevent impurities from adhering.
It improves the ease and efficiency of crucible cleaning, ensures a firm connection between the inner and outer crucibles at high temperatures, and makes them easy to disassemble and clean after cooling, reducing the amount of metal entering dead corners and facilitating the pouring out of the metal.
Smart Images
Figure CN223470488U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the crucible structure field, especially in easy to clean's combined crucible. BACKGROUND
[0002] Crucible is usually used for smelting gold, silver, copper and other metals, it has high heat resistance and high corrosion resistance and so on, can bear the corrosion and oxidation of metal under high temperature, guarantee the stability and precision of metal smelting, and in the smelting metal process, the impurities produced by high-temperature combustion will adhere to the surface of the crucible, therefore need to clean the inner wall of the crucible regularly to remove the impurities adhered to its surface, thereby eliminating the influence of the existence of impurities on metal smelting. However, the crucible is generally an integral structure, when cleaning operation, due to the existence of the crucible bottom structure, the dead angle will be formed at the junction of the crucible bottom and the side wall, the cleaning tool is difficult to touch, will hinder the cleaning process of the crucible, lead to the cleaning efficiency of the crucible is difficult to improve, especially for the crucible of greater depth.
[0003] Based on this, the utility model provides a kind of easy to clean's combined crucible, by setting detachable crucible bottom, when cleaning crucible, its bottom is removed, to reach the purpose of improving the cleaning convenience of crucible, improve its cleaning efficiency. SUMMARY
[0004] Based on this, it is necessary to provide a kind of easy to clean's combined crucible, including the inner crucible that is hollow cylinder and both ends are open, the inner side of the inner crucible forms containing space;It also includes the outer crucible that is hollow cylinder, and the lower end is sealed, and the upper end is open, the inner side of the outer crucible forms the cavity for containing the inner crucible;The cavity is sleeved on the lower section of the inner crucible, and the lower end of the inner crucible is attached to the bottom of the cavity;The thermal expansion coefficient of the inner crucible is greater than the outer crucible, and there is a containing gap between the outer side wall of the inner crucible and the inner side wall of the outer crucible.
[0005] In the utility model, the inner crucible and the outer crucible are combined as a crucible, wherein the outer crucible is sleeved on the bottom of the inner crucible, and the containing space formed on the inner side of the inner crucible is used for metal smelting;The containing gap between the inner crucible and the outer crucible is used to facilitate the assembly and disassembly of the inner crucible and the outer crucible.
[0006] The utility model discloses a combined crucible, which comprises an inner crucible and an outer crucible, wherein the inner crucible is arranged in the outer crucible, the inner crucible is arranged in the outer crucible in a telescopic manner, and the inner crucible is arranged in the outer crucible in a telescopic manner.
[0007] In the utility model, when the crucible needs to be cleaned periodically, the inner crucible and the outer crucible can be separated naturally after cooling, and the inner crucible can be easily taken out from the outer crucible, and the inner crucible and the outer crucible can be cleaned respectively. The inner crucible is not hindered by the bottom as the ordinary crucible, and the cleaning efficiency is effectively improved. The dead angle formed by the bottom and the side wall of the outer crucible is covered by the inner crucible during the metal smelting process, so that impurities cannot be attached to the dead angle of the outer crucible, and the cleaning convenience is improved. The cleaning process is facilitated, and the convenience and efficiency of the crucible cleaning can be effectively improved.
[0008] Further, the inner crucible is in the shape of a circular truncated cone with a small upper part and a large lower part, the cavity is also in the shape of a circular truncated cone with a small upper part and a large lower part, the outer diameter of the lower end of the inner crucible is not greater than the inner diameter of the top end of the cavity, and when the lower end of the inner crucible is attached to the bottom of the cavity, the outer side wall of the inner crucible is arranged in parallel with the inner side wall of the cavity.
[0009] In the utility model, the inner crucible and the cavity are both in the shape of a circular truncated cone with a small upper part and a large lower part, so that when the inner crucible expands to the point that the outer side wall of the inner crucible is attached to the inner side wall of the cavity, the inclination between the inner side wall of the cavity and the outer side wall of the inner crucible causes the inner side wall of the cavity to push the inner crucible to move downward. At this time, the inner side wall of the cavity can press the crucible downward to the point that the lower end of the inner crucible is tightly attached to the bottom of the cavity, thereby increasing the sealing performance of the lower end of the inner crucible and the bottom of the cavity, effectively reducing or even preventing the molten metal from entering between the inner crucible and the bottom of the cavity, and facilitating the pouring of the liquid metal in the crucible. Preferably, the angle between the side surface and the bottom surface of the circular truncated cone structure of the inner crucible and the cavity is 85°-88°.
[0010] Further, the outer crucible is in the shape of a cylinder, and the top end of the outer side wall of the outer crucible is outwardly convex to form a first flange.
[0011] In the utility model, the first flange at the top of the outer crucible is used to abut against and support the crucible clamp clamped on the outer crucible, thereby facilitating the use of the crucible clamp.
[0012] In addition, since the existing crucible support structure, such as a crucible frame, is generally adapted to the production of crucibles with a circular cross-section, the cylindrical outer crucible can be conveniently placed in the combined crucible.
[0013] Further, the material of the inner crucible is alumina ceramic, and the material of the outer crucible is zirconia ceramic.
[0014] In the utility model, the material of the inner crucible is alumina ceramic, and the material of the outer crucible is zirconia ceramic, wherein the thermal expansion coefficient of the alumina ceramic is about 8*10 −6 / ℃, the thermal expansion coefficient of silicon carbide is (0.5-1)*10 −6 / ℃, and when the combined crucible is used, the expansion of the inner crucible can make it tightly abut against the inner side wall of the cavity of the outer crucible.
[0015] Further, the inner side wall of the cavity and / or the outer side wall of the inner crucible is provided with a zirconia-based composite lubricating coating.
[0016] In the utility model, the zirconia-based composite lubricating coating has good high-temperature lubricating performance, which can effectively reduce friction, so that the inner crucible and the outer crucible are more easily relatively slid and kept stable during the heating process, thereby ensuring that the inner side wall of the cavity can smoothly abut against the lower end of the inner crucible at the bottom of the cavity.
[0017] Further, the top end of the outer side wall of the inner crucible is outwardly bent to form a second flange.
[0018] In the utility model, the second flange of the top end of the inner crucible protrudes from the surface of the inner crucible and is used as a stress result of the inner crucible, so that the inner crucible can be conveniently taken out of the outer crucible, and preferably, the second flange is upwardly inclined in a direction away from the inner crucible, so that the width of the upper end opening of the inner crucible can be increased, and the feeding operation of the combined crucible can be conveniently performed.
[0019] The principles and effects of the utility model will be further described in combination with the above technical solutions and the drawings:
[0020] In the utility model, when the crucible needs to be cleaned periodically, the inner crucible and the outer crucible will naturally separate after cooling, and the inner crucible can be easily taken out of the outer crucible, and the inner crucible and the outer crucible can be cleaned respectively, wherein the inner crucible will not be hindered by the bottom as the ordinary crucible, and the cleaning efficiency of the inner crucible can be effectively improved, and the dead angle formed by the intersection of the bottom and the side wall of the outer crucible will be covered by the inner crucible during the metal smelting process, so that impurities will not be attached to the dead angle of the outer crucible, and the cleaning convenience of the outer crucible can also be improved, and the cleaning process can be conveniently performed, so that the cleaning convenience and efficiency of the crucible can be effectively improved. DRAWINGS
[0021] Figure 1 A cross-sectional structure diagram of the combined crucible Figure 1 ;
[0022] Figure 2 A cross-sectional structure diagram of the combined crucible Figure 2 ;
[0023] Figure 3 For Figure 2 A partial enlarged view of A part.
[0024] The drawings
[0025] 1-inner crucible, 11-second flange, 2-outer crucible, 21-first flange, 3-contains gap. DETAILED DESCRIPTION
[0026] In order to facilitate those skilled in the art to understand, the following will be combined with the drawings and examples to make further detailed description of the utility model:
[0027] As Figures 1-3 , a combined crucible easy to clean, including the hollow cylinder, and the upper and lower ends are open inner crucible 1, the inner side of the inner crucible 1 forms a containing space;It also includes a hollow cylinder, and the lower end is sealed, and the upper end is open outer crucible 2, the inner side of the outer crucible 2 forms a cavity for containing the inner crucible 1;The cavity is sleeved on the lower part of the inner crucible 1, and the lower end of the inner crucible 1 is attached to the bottom of the cavity;The thermal expansion coefficient of the inner crucible 1 is greater than that of the outer crucible 2, and there is a containing gap 3 between the outer side wall of the inner crucible 1 and the inner side wall of the outer crucible 2.
[0028] In the utility model, the inner crucible 1 and the outer crucible 2 are combined as a crucible, wherein the outer crucible 2 is sleeved on the bottom of the inner crucible 1, and the containing space formed on the inner side of the inner crucible 1 is used for metal smelting;The containing gap 3 between the inner crucible 1 and the outer crucible 2 is used to facilitate the assembly and disassembly of the inner crucible 1 and the outer crucible 2.
[0029] In the utility model, when the crucible is heated, the inner crucible 1 and the outer crucible 2 will be heated and expanded, and the expansion degree of the inner crucible 1 with larger expansion coefficient is greater than that of the outer crucible 2, at this time, the containing gap 3 between the inner crucible 1 and the outer crucible 2 will disappear, and the outer side wall of the inner crucible 1 will be tightly attached to the inner side wall of the cavity of the outer crucible 2, so as to realize the mutual fixation of the inner crucible 1 and the outer crucible 2, and the crucible will be in a high temperature state for a long time during use, therefore, the combination firmness of the combined crucible of the utility model in use can be guaranteed.
[0030] The utility model discloses, the inner crucible 1 needs to clean up regularly, only needs to wait for it to cool down to complete after, the inner crucible 1 and outer crucible 2 will naturally separate, can easily take out the inner crucible 1 from outer crucible 2, carries out cleaning operation to the inner crucible 1 and outer crucible 2 respectively, wherein, the inner crucible 1 will not be as ordinary crucible generally is hindered by the bottom, can effectively promote its cleaning efficiency, the outer crucible 2 because in the metal smelting process, the dead angle formed by the bottom and lateral wall intersection will be covered by the inner crucible 1, therefore, will not adhere impurity at the dead angle of outer crucible 2, also can promote cleaning convenience, the process of cleaning is convenient, therefore, the utility model discan effectively promote the convenience and efficiency of crucible cleaning.
[0031] One of the embodiments, the inner crucible 1 is in the circular table shape of small up big down, the cavity is also in the circular table shape of small up big down, the outer diameter of the lower end of the inner crucible 1 is not greater than the inner diameter of the top end of the cavity, and when the lower end of the inner crucible 1 is attached to the bottom of the cavity, the outer side wall of the inner crucible 1 is parallel to the inner side wall of the cavity.
[0032] In this embodiment, the inner crucible 1 and the cavity are both in the circular table shape of small up big down, so that when the inner crucible 1 expands to the point where the outer side wall thereof is attached to the inner side wall of the cavity, the inclination between the inner side wall of the cavity and the outer side wall of the inner crucible 1 causes the inner side wall of the cavity to push the inner crucible 1 to move downward. At this time, the inner side wall of the cavity can press the crucible downward to the point where the lower end thereof is tightly attached to the bottom of the cavity, thereby increasing the sealing property of the lower end of the inner crucible 1 and the bottom of the cavity, effectively reducing or even preventing the molten metal from entering between the inner crucible 1 and the bottom of the cavity, and facilitating the pouring of the liquid metal in the crucible. Preferably, the angle between the side surface and the bottom surface of the circular table structure of the inner crucible 1 and the cavity is 85°-88°.
[0033] One of the embodiments, the outer crucible 2 is in the cylindrical shape, and the top end of the outer side wall of the outer crucible 2 is outwardly protruded to form a first flange 21.
[0034] In this embodiment, the first flange 21 at the top of the outer crucible 2 is used to abut against and support the crucible clamp clamped on the outer crucible 2, thereby facilitating the use of the crucible clamp.
[0035] In addition, since the existing crucible support structure, such as a crucible frame, is generally suitable for crucibles with circular cross sections, the outer crucible 2 in the cylindrical shape can facilitate the placement of the combined crucible.
[0036] One of the embodiments, the material of the inner crucible 1 is alumina ceramic, and the material of the outer crucible 2 is zirconia ceramic.
[0037] In this embodiment, the material of the inner crucible 1 is alumina ceramic, and the material of the outer crucible 2 is zirconia ceramic. The coefficient of thermal expansion of the alumina ceramic is about 8x10−6 / ℃, the thermal expansion coefficient of silicon carbide is (0.5-1) x 10 −6 / ℃, in the use of the combined crucible, the expansion of the inner crucible 1 can make it abut against the inner side wall of the cavity of the outer crucible 2.
[0038] In one embodiment, the inner side wall of the cavity and / or the outer side wall of the inner crucible 1 is provided with a zirconia-based composite lubricating coating.
[0039] In the embodiment, the zirconia-based composite lubricating coating has good high-temperature lubricating performance, which can effectively reduce friction, so that the inner crucible 1 and the outer crucible 2 are more easily relative sliding and stable during heating, thereby ensuring that the inner side wall of the cavity can smoothly abut the lower end of the inner crucible 1 against the bottom of the cavity.
[0040] In one embodiment, the top end of the outer side wall of the inner crucible 1 is outwardly bent to form a second flange 11.
[0041] In the embodiment, the second flange 11 of the top end of the inner crucible 1 protrudes from the surface of the inner crucible 1, which is used as the stress result of the inner crucible 1, and can facilitate the removal of the inner crucible 1 from the outer crucible 2, wherein preferably, the second flange 11 is inclined upward in a direction away from the inner crucible 1, so that the width of the opening at the upper end of the inner crucible 1 can be increased, and the feeding operation of the combined crucible can be facilitated.
[0042] The above embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as limiting the scope of the application. It should be noted that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.
Claims
1. A combination crucible that is easy to clean, characterized by, The inner crucible is in a hollow cylinder shape and has openings at both upper and lower ends, and an inner side of the inner crucible forms a containing space; the outer crucible is in a hollow cylinder shape, has a lower end sealed and an upper end opened, and an inner side of the outer crucible forms a containing cavity for containing the inner crucible; the containing cavity is sleeved on a lower segment of the inner crucible, and a lower end of the inner crucible is attached to a bottom of the containing cavity; a thermal expansion coefficient of the inner crucible is greater than that of the outer crucible, and an accommodating gap is formed between an outer side wall of the inner crucible and an inner side wall of the outer crucible.
2. A combination crucible easy to clean according to claim 1, characterized in that, The inner crucible is in a circular truncated cone shape with a small upper end and a large lower end, the containing cavity is also in a circular truncated cone shape with a small upper end and a large lower end, an outer diameter of the lower end of the inner crucible is not greater than an inner diameter of a top end of the containing cavity, and when the lower end of the inner crucible is attached to the bottom of the containing cavity, the outer side wall of the inner crucible is arranged in parallel with the inner side wall of the containing cavity.
3. A combination crucible easy to clean according to claim 2, characterized in that, The outer crucible is in a cylindrical shape, and a top end of the outer side wall of the outer crucible is outwardly convex to form a first flange.
4. A combination crucible easy to clean according to claim 1 or 3, wherein The inner crucible is made of alumina ceramic, and the outer crucible is made of zirconia ceramic.
5. A combination crucible easy to clean according to claim 4, characterized in that, The inner side wall of the containing cavity and / or the outer side wall of the inner crucible is provided with a zirconia-based composite lubricating coating.
6. A combination crucible easy to clean according to claim 2, wherein A top end of the outer side wall of the inner crucible is outwardly bent to form a second flange.