Crucible positioning protection device in high-temperature furnace

Abstract

The utility model provides a crucible positioning and protecting device in a high-temperature furnace, which relates to the technical field of fire assaying devices and is formed by mutually splicing an upper top plate and a support column, a plurality of crucible limiting openings are formed in the upper top plate and are used for placing and limiting crucibles; the supporting column is a single supporting column; or the supporting columns comprise a single supporting column and a double supporting column; the double supporting columns are connected with two sets of independent and adjacent upper top plates at the same time. The device is novel in structure, the whole device adopts an expandable splicing and assembling mode, the size, the hole number, the hole size and the hole height of the device can be adjusted according to actual needs through the splicing modules, operation is easy, and assembling, disassembling and local accessory replacement are convenient. According to the device, the crucible is kept upright, and a preset distance is arranged between the crucible limiting openings, so that the crucible does not topple, incline and adhere; in addition, the device can be used in cooperation with an automatic mechanical arm.

Description

Technical Field

[0001] The utility model relates to the technical field of fire assay devices, in particular to a crucible positioning and protection device in a high-temperature furnace. Background Art

[0002] The fire assay method is the main detection method for gold and silver analysis and trade arbitration in the gold industry at home and abroad. This method has the advantages of wide application range, large sampling volume, good representativeness, accurate and reliable results. Among them, the ore and other precious metal-containing samples are mixed with a variety of reagents, and then placed in a high-temperature furnace (such as a high-temperature box-type resistance furnace) for melting, and the precious metals and base metals in the sample are captured in the lead buckle. The melting step is an extremely important step, and the completion of the melting step plays a decisive role in the test results.

[0003] During the melting process, if the crucible is tilted, the molten material is likely to overflow (the molten material will expand during the high-temperature reaction), resulting in a low test result. In addition, if the crucible is tilted, the molten material overflowing during the high-temperature reaction will adhere to the outer wall of the tilted crucible, which is likely to cause the adjacent crucibles to stick together. After reaching the process temperature, the sticking crucible will tilt or even be brought out during the process of taking out the crucible, so that the tilted crucible cannot be taken out or sticks to the adjacent crucible, and the adjacent crucible will tilt or be brought out during the process of taking out the furnace, causing the sample in the adjacent crucible to fail to be tested, or even damage the fixture. In an electric furnace that cooperates with an automated fixture, when there is no high-temperature crucible protection device, some crucibles are inaccurately positioned or tilted during the process of taking out the crucible. When the fixture clamps the crucible, the inaccurately positioned and tilted crucibles will be swept down or cannot be clamped up. If a crucible falls down, it may cause a "domino effect", that is, the swept down crucible will knock down multiple crucibles, and even cause the entire batch of crucibles to fall down. The instability of the crucible in the furnace cannot meet the requirements of automated operation using a robotic arm fixture, and an unmanned operation mode cannot be achieved.

[0004] In addition, due to the ultra-high temperature environment characteristics of the high-temperature furnace, conventional refractory and high-temperature resistant materials cannot be connected using conventional screws, resulting in certain technical bottlenecks in the research and development of high-temperature resistant crucible protection devices. In addition, refractory and high-temperature resistant materials will expand and deform or become soft and fragile during high-temperature processes. There are technical problems such as the protective device is easy to deform and has a short service life, resulting in a technical risk of poor stability in its protective effect on the crucible.

[0005] In view of the above disadvantages, it is necessary to design an improved crucible positioning and protection device in a high-temperature furnace to solve the above problems. Utility Model Content

[0006] The purpose of the present utility model is to provide a crucible positioning and protection device in a high-temperature furnace, so as to solve the technical problems of crucible tilt and crucible adhesion in the high-temperature furnace, as well as poor stability and short service life of the device itself.

[0007] To achieve the above-mentioned utility model purpose, the present utility model provides a crucible positioning and protection device in a high-temperature furnace, which is assembled by mutually assembling an upper top plate and support columns;

[0008] A number of crucible limiting ports are arranged on the upper top plate for placing the crucible and limiting and protecting the crucible;

[0009] One end of the support column facing the upper top plate is provided with a positioning part, and the upper top plate is provided with a matching part for cooperating with the positioning part.

[0010] As a further improvement of the present utility model, the support column is a single support column, and a single positioning part is arranged at the end of the single support column for positioning and connecting with a single group of upper top plates.

[0011] As a further improvement of the present utility model, the support column includes a single support column and a double support column; two positioning parts are arranged at the end of the double support column for positioning and connecting with two groups of independently and adjacently arranged upper top plates; a single positioning part is arranged at the end of the single support column for positioning and connecting with a single group of upper top plates.

[0012] As a further improvement of the present utility model, the positioning part is one or more of a positioning pin, a stud, and a male buckle, and the matching part correspondingly adopts a positioning hole, a screw hole, or a female buckle.

[0013] As a further improvement of the present utility model, the upper top plate is assembled by combining one or two of a long strip top plate and a square top plate in a predetermined quantity.

[0014] As a further improvement of the present utility model, the upper top plate is assembled by combining one or two or more of an L-shaped top plate, a T-shaped top plate, and a cross-shaped top plate in a predetermined quantity.

[0015] As a further improvement of the present utility model, a telescopic joint with a width of 0.2 - 2 mm is arranged between adjacent upper top plates.

[0016] As a further improvement of the present utility model, the crucible positioning and protection device in the high-temperature furnace further includes a lower bottom plate symmetrically arranged with the upper top plate; both ends of the support column are respectively connected with the upper top plate and the lower bottom plate.

[0017] As a further improvement of the present utility model, the lower bottom plate is a multi-layer plate structure formed by stacking a number of groups of weight plates.

[0018] As a further improvement of the present utility model, the positioning hole is one of a circular hole, a square hole, and an irregularly shaped hole.

[0019] As a further improvement of the present utility model, the height of the support column is less than the height of the crucible and greater than 1 / 3 of the height of the crucible; the distance between two adjacent crucible limiting openings is 80 mm to 200 mm.

[0020] As a further improvement of the present utility model, the distance between the upper top plate and the lower bottom plate is 30 mm to 100 mm.

[0021] As a further improvement of the present utility model, the crucible limiting opening is one of a circular shape, a square shape, and an irregular shape.

[0022] As a further improvement of the present utility model, when the crucible limiting opening is circular, the diameter is 50 mm to 110 mm, and the number of crucible limiting openings is 6 to 80.

[0023] As a further improvement of the present utility model, both the support plate and the support column are made of refractory materials, and can withstand a maximum temperature of 1300 °C.

[0024] The beneficial effects of the present utility model are as follows:

[0025] 1. The crucible positioning and protection device in the high-temperature furnace provided by the present utility model has a novel structure and adopts an expandable splicing and assembly method as a whole. The size, number of openings, size of openings, distance between openings, number of layers and height of the counterweight plate of the device can be adjusted according to actual needs by splicing modules (support plates and support columns). The operation is simple, convenient for assembly, disassembly and local replacement of accessories, and has the function of local replacement, preventing the need to replace the entire device when one part is damaged, significantly extending the service life of the device, and effectively solving the technical defect that the refractory material is fragile and causes the device to fail to work properly. Moreover, the support column can effectively support the support plate in a high-temperature environment, preventing the horizontally placed support plate from sagging downward due to softening at high temperature, resulting in the technical defect that the crucible cannot be stably limited.

[0026] 2. The crucible positioning and protection device provided by the present utility model in the high-temperature furnace, based on the structural design of the support plate and the support column, can protect the crucible from tilting or toppling after being placed in the high-temperature furnace chamber. Moreover, a predetermined distance is set between the crucible limiting ports to prevent adjacent crucibles from sticking together. During the firing process of the crucible in the high-temperature furnace chamber, while the objects inside the crucible do not spill out, the stability of the crucible removal operation link is effectively ensured. Additionally, it can be used in cooperation with an automated robotic arm for easy removal by the robotic arm. Through the cooperation of the height of the upper top plate and the size of the crucible limiting port, this device can make the crucible stable on the lower bottom plate (weight plate). With the protection of the crucible limiting port, even if the crucible tilts, due to the center of gravity of the crucible, when it touches the inner edge of the crucible limiting port, it will automatically correct back to the vertical state to achieve limiting and protection.

[0027] 3. The crucible positioning and protection device provided by the present utility model in the high-temperature furnace is made of high-temperature resistant materials, suitable for high-temperature furnaces, and can withstand a maximum temperature of 1300 °C; it is not easily deformed and has a service life of more than two years; and it can also be applied in normal temperature environments and low-temperature environments.

[0028] 4. The crucible positioning and protection device provided by the present utility model in the high-temperature furnace has a multi-layer weight plate combined structure for the lower bottom plate. The weight plates can ensure that the device will not displace during the continuous loading / removal process of the crucibles, reducing the instability of manual operation and automated operation. Moreover, the number of weight plates can be adjusted according to the number of crucibles.

[0029] 5. The crucible positioning and protection device provided by the present utility model in the high-temperature furnace has an expandable assembly structure. A telescopic joint structure is provided between the adjacent upper top plates to ensure that the device has a certain thermal expansion space when continuously heating up in the electric furnace, effectively preventing the technical problems of damage or reduced service life caused by mutual extrusion interference between the upper top plates due to the high-temperature environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is the overall structural schematic diagram of the crucible positioning and protection device provided by Embodiment 1 of the present utility model in the high-temperature furnace;

[0031] Figure 2 is the structural schematic diagram of the upper top plate of the crucible positioning and protection device provided by Embodiment 1 of the present utility model in the high-temperature furnace;

[0032] Figure 3 is the structural schematic diagram of the single support column and the positioning pin of the crucible positioning and protection device provided by Embodiment 1 of the present utility model in the high-temperature furnace;

[0033] Figure 4 is the structural schematic diagram of the double support column and the positioning pin of the crucible positioning and protection device provided by Embodiment 1 of the present utility model in the high-temperature furnace;

[0034] Figure 5 It is a schematic diagram of the overall structure of the crucible positioning and protection device in the high-temperature furnace provided in Embodiment 2 of the present utility model;

[0035] Figure 6 It is a schematic diagram of the overall structure of the crucible positioning and protection device in the high-temperature furnace provided in Embodiment 3 of the present utility model;

[0036] Figure 7 It is a schematic diagram of the overall structure of the crucible positioning and protection device in the high-temperature furnace provided in Embodiment 4 of the present utility model.

[0037] Reference numerals

[0038] 1 - upper top plate; 2 - single support column; 3 - double support column; 4 - positioning pin; 5 - top plate positioning hole; 6 - lower bottom plate; 7 - bottom plate positioning hole; 8 - crucible limiting opening; 9 - crucible. Detailed implementation manners

[0039] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0040] Here, it should also be noted that in order to avoid obscuring the present utility model due to unnecessary details, only the structures and / or processing steps closely related to the solution of the present utility model are shown in the drawings, while other details less related to the present utility model are omitted.

[0041] In addition, it should also be noted that the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device.

[0042] Please refer to Figures 1 to 7 As shown, the present utility model provides a crucible positioning and protection device in a high-temperature furnace to solve the problems of crucible inclination and crucible adhesion in the high-temperature furnace, which includes a support plate, support columns, and a crucible limiting opening 8. The whole device is assembled by the support plate and the support columns according to a predetermined quantity and a predetermined shape.

[0043] In some embodiments, the support plate includes an upper top plate 1.

[0044] In some other embodiments, the support plate includes an upper top plate 1 and a lower bottom plate 6.

[0045] The lower bottom plate 6 is a multi-layer plate structure formed by stacking several groups of counterweight plates. The design of this multi-layer counterweight plate structure can ensure that the device will not be easily displaced during the continuous loading / removal of the crucible 9, reducing the instability of manual operation and automated operation. Moreover, the number of counterweight plates can be adjusted according to the number of crucibles 9.

[0046] A number of crucible limiting ports 8 are provided on the upper top plate 1 for placing and limiting the crucible 9.

[0047] In some embodiments, the support column is a single support column 2.

[0048] In some other embodiments, the support column includes a single support column 2 and a double support column 3.

[0049] The double support column 3 is simultaneously and fixedly connected to two groups of independent and adjacent support plates.

[0050] A positioning portion is provided at one end of the support column facing the upper top plate, and a mating portion for cooperating with the positioning portion is provided on the upper top plate.

[0051] The positioning portion is one or more of a positioning pin, a stud, and a male buckle, and the mating portion correspondingly adopts a positioning hole, a screw hole, and a female buckle.

[0052] Those skilled in the art know that the above solutions for the positioning portion and the mating portion are only exemplary descriptions of the above positioning structure of the present invention. Those skilled in the art can adopt other positioning structures or clamping structures for substitution, which are all within the protection scope of the positioning portion and the mating portion of the present invention.

[0053] Furthermore, the positioning hole is one of a circular hole, a square hole, and an irregularly shaped hole.

[0054] In some specific embodiments, a top plate positioning hole 5 is provided on the upper top plate 1; a bottom plate positioning hole 7 is provided on the lower bottom plate 6.

[0055] Please refer to Figure 3 As shown, single positioning pins 4 are respectively provided at the upper and lower ends of the single support column 2 for positioning and connecting with a single group of support plates.

[0056] Please refer to Figure 4 As shown, two positioning pins 4 are respectively provided at the upper and lower ends of the double support column 3 for positioning and connecting with two groups of independent and adjacent support plates.

[0057] Both ends of the support column are respectively and fixedly connected to the upper top plate 1 and the lower bottom plate 6.

[0058] The distance between the upper top plate 1 and the lower bottom plate 6 is 30 mm to 100 mm.

[0059] In some embodiments, the upper top plate 1 is assembled by combining one or two of a long strip top plate and a square top plate in a predetermined quantity.

[0060] In some other embodiments, the upper top plate 1 is assembled by combining one or two or more of an L-shaped top plate, a T-shaped top plate, and a cross-shaped top plate in a predetermined quantity.

[0061] A expansion joint with a width of 0.2 - 2 mm is provided between adjacent upper top plates 1, ensuring that the device has a certain thermal expansion space when continuously heating up in a high-temperature furnace, effectively preventing the technical problems of damage or reduced lifespan caused by mutual extrusion interference between the upper top plates 1 in a high-temperature environment.

[0062] The height of the support column is less than the height of the crucible 9 and greater than 1 / 3 of the height of the crucible; the distance between two adjacent crucible limiting ports is 80 mm - 200 mm.

[0063] The crucible limiting port is one of a circular shape, a square shape, and an irregular shape.

[0064] When the crucible limiting port is circular, the diameter is 50 mm - 110 mm, and the number of crucible limiting ports is 6 - 80. The difference between the inner diameter of the crucible limiting port and the outer diameter of the crucible is 5 mm - 15 mm.

[0065] Example 1

[0066] Please refer to Figures 1 - 4 As shown, Example 1 provides a crucible positioning and protection device in a high-temperature furnace, including an upper top plate 1, a single support column 2, a double support column 3, a positioning pin 4, a top plate positioning hole 5, a lower bottom plate 6, a bottom plate positioning hole 7, and a crucible limiting port 8.

[0067] Among them, the upper top plate 1 is assembled by splicing three groups of long strip top plates together. When fixing a single long strip top plate, the positioning pin 4 is connected to the single support column 2 to fix the upper top plate 1 and the lower bottom plate 6.

[0068] When it is necessary to fix two adjacent long strip top plates, two positioning pins 4 need to be connected to the double support column 3 to fix the upper top plate 1 and the lower bottom plate 6 accordingly.

[0069] When assembling and combining according to the preset structure, the positioning pins 4 on the single support column 2 and the double support column 3 are respectively connected to the top plate positioning hole 5 and the bottom plate positioning hole 7 on the upper top plate 1 and the lower bottom plate 6. The crucible limiting ports 8 are evenly distributed on the upper top plate 1.

[0070] Example 2

[0071] Please refer to Figures 3 - 5As shown in the figure, Embodiment 2 provides a crucible positioning and protection device in a high-temperature furnace, which includes an upper top plate 1, a single support column 2, a double support column 3, a positioning pin 4, a top plate positioning hole 5, a lower bottom plate 6, a bottom plate positioning hole 7, and a crucible limiting opening 8.

[0072] Among them, the upper top plate 1 is formed by splicing four top plates (two large long-strip top plates and two small square top plates). When fixing a single top plate, the positioning pin 4 is connected to the single support column 2 to fix the upper top plate 1 and the lower bottom plate 6.

[0073] When it is necessary to fix two independent and adjacent top plates, two positioning pins 4 are used to connect with the double support column 3 to fix the upper top plate 1 and the lower bottom plate 6.

[0074] When assembling according to the preset structure, the positioning pins 4 on the single support column 2 and the double support column 3 are respectively connected to the top plate positioning hole 5 and the bottom plate positioning hole 7 on the upper top plate 1 and the lower bottom plate 6. The crucible limiting openings 8 are evenly distributed on the upper top plate 1.

[0075] Embodiment 3

[0076] Please refer to Figure 3 、 6 As shown in the figure, Embodiment 3 provides a crucible positioning and protection device in a high-temperature furnace, which includes an upper top plate 1, a single support column 2, a positioning pin 4, a top plate positioning hole 5, a lower bottom plate 6, a bottom plate positioning hole 7, and a crucible limiting opening 8.

[0077] Among them, the upper top plate 1 is formed by splicing three-shaped top plates (the four corners of the upper top plate 1 are L-shaped top plates, the four sides are T-shaped top plates, and the middle part is a cross-shaped top plate). When fixing the upper top plate 1, the positioning pin 4 is used to connect with the single support column 2 to fix the upper top plate 1 and the lower bottom plate 6.

[0078] When assembling according to the preset structure, the positioning pin 4 on the single support column 2 is respectively connected to the top plate positioning hole 5 and the bottom plate positioning hole 7 on the upper top plate 1 and the lower bottom plate 6. The crucible limiting openings 8 are evenly distributed on the upper top plate 1.

[0079] Embodiment 4

[0080] Please refer to Figure 3 、 4 As shown in Figures 、7, Embodiment 4 provides a crucible positioning and protection device in a high-temperature furnace, which includes an upper top plate 1, a single support column 2, a double support column 3, a positioning pin 4, a top plate positioning hole 5, a lower bottom plate 6, a bottom plate positioning hole 7, and a crucible limiting opening 8.

[0081] Among them, the upper top plate 1 is formed by splicing a plurality of square top plates (a square top plate with a crucible limiting opening 8 is an independent top plate structure). The four top corners of the entire device are connected to the single support column 2 by positioning pins 4 to fix the upper top plate 1 and the lower bottom plate 6; the rest are connected to the double support column 3 by two positioning pins 4 to fix the upper top plate 1 and the lower bottom plate 6.

[0082] When assembling according to the preset structure, the positioning pins 4 on the single support column 2 and the double support column 3 are respectively connected to the top plate positioning holes 5 and the bottom plate positioning holes 7 on the upper top plate 1 and the lower bottom plate 6. The crucible limiting openings 8 are evenly distributed on the upper top plate 1.

[0083] Those skilled in the art know that the overall assembly scheme of the above device is only an exemplary illustration of the overall assembly structure of the present utility model. Those skilled in the art can use other assembly structures for substitution, which are all within the protection scope of the device of the present utility model. Moreover, the size, shape, etc. of the support plate can be substituted, and are not limited to the above. And, the distance between the upper top plate and the lower bottom plate, the diameter of the crucible limiting opening, the distance between adjacent two crucible limiting openings, the number of crucible limiting openings and other parameter settings are not limited to the above scheme.

[0084] The working process of the crucible positioning and protection device in the high-temperature furnace provided by the present utility model is as follows:

[0085] During operation, according to actual application needs, after the support plate and the support column are spliced and installed in a predetermined combination manner, they are placed at the bottom of the furnace chamber of the sample melting furnace, and the positioning of the crucible positioning and protection device in the high-temperature furnace is completed with an automatic fixture. When loading and unloading the crucible 9, the automatic fixture is used to clamp the crucible 9 and put it in or take it out. When the crucible 9 is inside the crucible limiting opening 8 of the crucible positioning and protection device in the high-temperature furnace, ensure that the crucible 9 is in an upright state without tilting or sticking, so as to ensure the smooth progress of the automatic crucible loading and unloading operation. During the above process, the crucible 9 generally does not touch the crucible limiting opening 8, the bottom of the crucible 9 contacts the lower bottom plate 6, and the crucible limiting opening 8 does not bear weight. Even if the crucible 9 tilts, due to the center of gravity of the crucible 9, when it touches the inner edge of the crucible limiting opening 8, it will automatically correct back to a vertical state to achieve limiting and protection.

[0086] In summary, the present utility model provides a crucible positioning and protection device in a high-temperature furnace, which relates to the technical field of fire assay devices and is assembled by mutually assembling an upper top plate and support columns; a plurality of crucible limiting openings are provided on the upper top plate for placing and limiting crucibles; the support columns are single support columns; alternatively, the support columns include single support columns and double support columns; the double support columns are simultaneously connected to two groups of independently and adjacently arranged upper top plates. The device has a novel structure and adopts an expandable splicing and assembly method as a whole. The size, the number of openings, the size of the openings, and the height of the device can be adjusted according to actual needs by splicing modules, and the operation is simple, convenient for assembly, disassembly, and partial replacement of accessories. Based on the structural design of the support plate and the support columns, the crucibles are kept upright, and a predetermined distance is set between the crucible limiting openings, so that the crucibles do not topple, do not tilt, and do not stick; moreover, it can be used in cooperation with an automated robotic arm, which is convenient for taking out with the robotic arm.

[0087] The above embodiments are only used to illustrate the technical solutions of the present utility model and not to limit them. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present utility model can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present utility model.

Claims

1. A crucible positioning and protection device in a high temperature furnace, characterized in that: It is composed of an upper top plate and supporting columns assembled together; The upper top plate is provided with a plurality of crucible limiting openings for placing the crucible and limiting the crucible for protection; A positioning portion is disposed at one end of the support column facing the upper top plate, and a matching portion for matching with the positioning portion is disposed on the upper top plate.

2. The crucible positioning and protection device in a high temperature furnace according to claim 1, characterized in that: The support column is a single support column, and a single positioning portion is provided at the end of the single support column for positioning and connecting with the upper top plate of the single group.

3. The crucible positioning and protection device in a high temperature furnace according to claim 1, characterized in that: The support column includes a single support column and a double support column; the end of the double support column is provided with two positioning parts for positioning and connecting with two groups of independent and adjacent upper top plates; the end of the single support column is provided with a single positioning part for positioning and connecting with a single group of upper top plates.

4. A crucible positioning and protection device for a high temperature furnace according to any one of claims 1 to 3, characterized in that: The positioning portion is one or more of a positioning pin, a stud, and a male buckle, and the matching portion correspondingly adopts a positioning hole, a screw hole, or a female buckle.

5. A crucible positioning and protection device for a high temperature furnace according to any one of claims 1 to 3, characterized in that: The upper top plate is assembled by combining one or two of a long strip top plate and a square top plate in a predetermined number.

6. A crucible positioning and protection device for a high temperature furnace according to any one of claims 1 to 3, characterized in that: The upper top plate is assembled by combining one or two or more of an L-shaped top plate, a T-shaped top plate, and a cross-shaped top plate in a predetermined number.

7. The crucible positioning and protection device in a high temperature furnace according to claim 1, characterized in that: The crucible positioning and protection device in the high-temperature furnace also includes a lower bottom plate symmetrically arranged with the upper top plate; the two ends of the support column are respectively connected with the upper top plate and the lower bottom plate; The lower base plate is a multi-layer plate structure formed by stacking a plurality of groups of counterweight plates.

8. The crucible positioning and protection device in a high temperature furnace according to claim 1, characterized in that: An expansion joint with a width of 0.2 to 2 mm is arranged between adjacent upper top plates.

9. The crucible positioning and protection device in a high temperature furnace according to claim 1, characterized in that: The crucible limiting opening is one of a circular, square, and irregular shape; When the crucible limiting opening is circular, the diameter is 50 mm to 110 mm; the number of the crucible limiting openings is 6 to 80.

10. The crucible positioning and protection device in a high temperature furnace according to claim 1, characterized in that: The height of the support column is less than the height of the crucible and greater than 1 / 3 of the height of the crucible; the distance between two adjacent crucible limiting openings is 80 mm to 200 mm.

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