Crucible clamp assembly for platinum crucible

Abstract

The utility model discloses a crucible clamp assembly for a platinum crucible. The crucible clamp assembly comprises a lengthened bracket and a crucible clamp body, the lengthened bracket is used for transferring the platinum crucible from the interior of the high-temperature box to a doorway of the high-temperature box; the crucible clamp body is used for transferring a platinum crucible; the positions, making contact with the platinum crucible, of the lengthened bracket and the crucible clamp body are wrapped by platinum. The crucible clamp body and the lengthened bracket are combined for use, and the lengthened bracket can extend into the muffle furnace, so that operators are prevented from being baked at high temperature. By means of the combination of the supporting device and the supporting device, the platinum crucible can be transferred on the premise that operators are prevented from being scalded by high temperature, and meanwhile the risk that the operators clamp the platinum crucible is avoided by replacing a clamping mode with supporting. Therefore, compared with the prior art, the product is more suitable for an experiment in which the platinum crucible needs to be taken out from the muffle furnace while the platinum crucible is hot and an experiment in which the crucible must be taken out when a sample in the platinum crucible is in a molten state.

Description

Technical Field

[0001] This utility model relates to the field of crucible tongs technology, and more specifically, to a crucible tong assembly for platinum crucibles. Background Technology

[0002] A muffle furnace is a box-shaped heating furnace where products are heated, held, and cooled. Throughout the heating process, the products remain stationary, and feeding and discharging occur through a single door or slot. It is also known as an intermittent production furnace. When the standard requires heating temperatures above 900℃, platinum crucibles and corresponding platinum crucible tongs are needed for crucible removal. Because of the deep interior of a muffle furnace, operators must reach deep inside with ordinary crucible tongs to grasp the platinum crucible, posing a risk of burns. Furthermore, due to the properties of platinum crucibles, careful control of the clamping force is required to avoid deformation. However, some experimental methods require the crucible to be removed while the sample inside is molten, demanding rapid operation. Since operators' control over the crucible tongs varies, the likelihood of damage or deformation to the platinum crucible increases significantly under high-temperature baking and rapid operation conditions. Therefore, the technical problem to be solved by this invention is how to prevent personnel from being burned when removing the platinum crucible from the muffle furnace, while standardizing the actions of each operator when handling the crucible with crucible tongs to avoid damaging the platinum crucible. Utility Model Content

[0003] The utility model description section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This utility model description section is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0004] To at least partially solve the above problems, the present invention provides a crucible clamp assembly for a platinum crucible, comprising: an extended bracket and a crucible clamp body;

[0005] The extended bracket is used to transfer the platinum crucible from inside the high-temperature chamber to the door of the high-temperature chamber;

[0006] The crucible tongs body is used to transfer the platinum crucible;

[0007] The extended bracket and the crucible tongs body are both encased in platinum at the points where they contact the platinum crucible.

[0008] Preferably, the extension bracket consists of a U-shaped bracket disposed at one end of the extension rod and a handle disposed at the other end of the extension rod, wherein platinum wire is wound on the U-shaped bracket and the length of the extension rod is L.

[0009] Preferably, the crucible tong body consists of two half-tongs movably connected by a connecting post. Each half-tong consists of a tong handle, a support section disposed at one end of the tong handle, and a gripping section connected to the tong handle through the support section. The length of the tong handle is d, and d is less than L. The tong handles of the two half-tongs are movably connected by a connecting post.

[0010] Preferably, the pliers are provided with a handle.

[0011] Preferably, the supporting segment is arc-shaped, and the cross-sections of the top and bottom surfaces of the supporting segment are both arc-shaped. The top surface of the supporting segment is a first arc-shaped surface with an arc radius of r, and the bottom surface of the supporting segment is a second arc-shaped surface with an arc radius of R, where r is less than R.

[0012] Preferably, the clamping segment extends from the end of the supporting segment toward the top surface of the supporting segment and away from the supporting segment.

[0013] Preferably, the inner wall of the pliers handle is provided with a mounting groove, and the outer wall of the pliers handle is provided with a through groove communicating with the mounting groove. A movable member is provided in the mounting groove, one end of which is movably connected to the inner wall of the mounting groove and extends to the outside of the pliers handle through the through groove. The other end of the movable member is hinged to the end of the movable member of another half-pliers. A snap-fit ​​member is provided on the pliers handle, and the snap-fit ​​member selectively connects to the movable member passing through the through groove.

[0014] Preferably, the movable component consists of a toothed snap-fit ​​end and a connecting rod hinged to another movable component. The snap-fit ​​end is provided with a connecting shaft that is movably connected to the inner wall of the mounting groove, and the snap-fit ​​end is circular.

[0015] Preferably, the locking member consists of a connector that is movably connected to the outer wall of the pliers handle, and a locking portion that is selectively connected to the locking end. The connector is disposed on the locking portion, and the locking portion is provided with teeth.

[0016] Preferably, the snap-fit ​​portion is provided with an arc-shaped surface that adapts to the outer wall of the snap-fit ​​end, and the teeth of the snap-fit ​​portion are located within the arc-shaped surface.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects:

[0018] In practical applications, we also attempted to use only the extended bracket instead of the crucible tongs to remove the platinum crucible from the muffle furnace. However, we found that relying solely on the extended bracket was unstable, and the platinum crucible had tipped over. Therefore, we combined the crucible tongs with the extended bracket. The extended bracket can extend into the muffle furnace, preventing operators from being exposed to high temperatures. After the operator moves the platinum crucible from the furnace to the doorway, the crucible tongs support it from bottom to top. The curved surface of the support section supports the crucible while preventing it from being indented by its own weight. Combined with the clamping function of the crucible tongs, it provides sufficient clamping force to prevent the crucible from tipping over. This combination allows for the transfer of the platinum crucible without causing burns to the operator, and by supporting instead of clamping, it avoids the risk of injury from the crucible being pinched. Therefore, this product is more suitable than existing technologies for experiments that require removing the platinum crucible from the muffle furnace while it is still hot, as well as experiments that require removing the crucible while the sample inside is still molten.

[0019] The crucible tong assembly for platinum crucibles described herein, along with other advantages, objectives, and features of this invention, will be partly apparent from the following description and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 This is a schematic diagram of the crucible clamp assembly for a platinum crucible according to the present invention.

[0022] Figure 2 This is a schematic diagram of the crucible tong body in this utility model (top surface facing upwards, closed state).

[0023] Figure 3 This is a schematic diagram of the crucible tong body in this utility model (top surface facing upwards, in the open state).

[0024] Figure 4 This is a schematic diagram of the crucible tong body in this utility model (bottom facing up, closed state).

[0025] Figure 5 This is a schematic diagram of the crucible tong body in this utility model (bottom facing up, in the open state).

[0026] Figure 6This is a cross-sectional structural diagram of the first arc-shaped surface and the second arc-shaped surface in this utility model.

[0027] Figure 7 This is a schematic diagram of the connector and movable part before they are connected in this utility model.

[0028] Figure 8 This is a schematic diagram of the connection between the snap-fit ​​component and the movable component in this utility model.

[0029] Figure 9 This is a structural schematic diagram of the snap-fit ​​component and the movable component in this utility model.

[0030] In the figure: 1 Extended bracket, 11 Extended rod, 12 U-shaped bracket, 2 Crucible tong body, 3 Connecting column, 4 Half tong, 41 Tong handle, 411 Placement groove, 412 Through groove, 42 Support section, 421 First arc surface, 422 Second arc surface, 43 Clamping section, 5 Movable part, 51 Snap-fit ​​end, 52 Connecting rod, 53 Connecting shaft, 6 Snap-fit ​​part, 61 Connecting part, 62 Snap-fit ​​part. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments, so that those skilled in the art can implement it based on the description.

[0032] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0033] like Figures 1-9 As shown, this utility model provides a crucible clamp assembly for platinum crucibles, including: an extended bracket 1 and a crucible clamp body 2, as... Figure 1 As shown;

[0034] The extended bracket 1 consists of a U-shaped bracket 12 at one end of the extended rod 11 and a handle at the other end of the extended rod 11. The length of the extended rod 11 can be adjusted according to the actual depth of the muffle furnace. Platinum wire is wound around the U-shaped bracket 12. Because the extended bracket 1 is only used to transfer the platinum crucible from inside the muffle furnace to the entrance of the muffle furnace, the contact time with the platinum crucible is short, and the travel distance inside the muffle furnace is short, so only platinum wire needs to be wound around the U-shaped bracket 12. It is not necessary to cover the entire U-shaped bracket 12 with platinum, thus reducing the amount of platinum used. The length of the extended rod 11 is L, and L should not be less than the depth of the muffle furnace. The extended bracket 1 is used to transfer the platinum crucible from inside the high-temperature chamber to the entrance of the high-temperature chamber.

[0035] The crucible tong body 2 is composed of two half-clamps 4 connected by a connecting post 3. The two half-clamps 4 are the first half-clamp 4 and the second half-clamp 4. Each half-clamp 4 is composed of a clamp handle 41, a support section 42 provided at one end of the clamp handle 41, and a gripping section 43 connected to the clamp handle 41 through the support section 42. The length of the clamp handle 41 is d, and d is less than L. The clamp handle 41 of the first half-clamp 4 and the clamp handle 41 of the second half-clamp 4 are connected by the connecting post 3.

[0036] The supporting section 42 of the first half clamp 4 and the supporting section 42 of the second half clamp 4 constitute a supporting part;

[0037] The gripping section 43 of the first half-clamp 4 and the gripping section 43 of the second half-clamp 4 constitute a gripping part.

[0038] The clamp handle 41 is provided with a handle.

[0039] The supporting section 42 is arc-shaped, indicating that the crucible tong body 2 is basically the same as the crucible tongs of the prior art. It also consists of two arc-shaped supporting sections 42 forming the supporting part to support the platinum crucible, and two clamping sections 43 forming the clamping part to clamp the platinum crucible when necessary. The crucible tong body 2 is operated by the handle. When the crucible tong body 2 is opened, it is in an X-shape, with the two half-clamps 4 hinged by the connecting post 3. Figure 2-5 As shown. The difference from existing technology lies in the fact that the cross-sections of both the top and bottom surfaces of the supporting section 42 are arc-shaped, as... Figure 6 As shown, the top surface of the supporting section 42 is a first arc-shaped surface 421 with a cross-sectional radius of r, and the bottom surface of the supporting section 42 is a second arc-shaped surface 422 with a cross-sectional radius of R, where r is less than R. In this invention, we have made structural optimizations to the supporting section 42 for the platinum crucible. Because the supporting part supports the platinum crucible from bottom to top, the traditional method of supporting the crucible with crucible clamps involves line contact between the edge of the supporting part and the crucible, rather than surface contact. This is why when the weight of the molten metal in the platinum crucible is too large, or when the operator does not properly control the clamping force, clamp marks may appear on the platinum crucible. To increase the contact area with the platinum crucible, we have set both the top and bottom surfaces of the supporting section 42 as arc-shaped surfaces, so that the crucible clamp body 2 can have a sufficiently large contact area when supporting the platinum crucible. To enable the crucible tongs body 2 to be used with platinum crucibles of different sizes, two arc-shaped surfaces of different diameters are provided at the top and bottom of the support section 42 for the operator to choose from. The gripping section 43 extends from the end of the support section 42 toward the top surface of the support section 42 and away from the support section 42. Both the gripping section 43 and the support section 42 are covered with platinum. The crucible tongs body 2 is used to transfer platinum crucibles.

[0040] The extended bracket 1 and the crucible clamp body 2 are all encased in platinum at the points where they contact the platinum crucible (U-shaped bracket 12, support section 42, and clamping section 43).

[0041] The working principle and beneficial effects of the above technical solution are as follows: In practical applications, we also tried using only the extended bracket 1 to replace the crucible tongs body 2 to complete the action of removing the platinum crucible from the muffle furnace. However, it was found that relying solely on the extended bracket 1 was not stable, and the platinum crucible had tipped over. Therefore, we used the crucible tongs body 2 and the extended bracket 1 as a combination. The extended bracket 1 can extend into the muffle furnace to prevent the operator from being exposed to high temperatures. After the operator transfers the platinum crucible from the muffle furnace to the doorway, the crucible tongs body 2 supports the platinum crucible from bottom to top. The arc-shaped surface of the supporting section 42 can support the platinum crucible while preventing it from being indented by its own weight. At the same time, combined with the clamping function of the crucible tongs body 2 itself, it can provide a certain clamping force to prevent the platinum crucible from tipping over. By combining these two methods, the platinum crucible can be transferred without causing burns to the operator. Furthermore, by using a support instead of clamping, the risk of the operator injuring themselves by clamping the platinum crucible is eliminated. Therefore, this product is more suitable than existing technologies for experiments requiring the platinum crucible to be removed from the muffle furnace while still hot, and for experiments where the sample inside the platinum crucible must be removed while still molten.

[0042] In the aforementioned embodiments, we mentioned that the top and bottom structures of the supporting section 42 can be optimized to allow the crucible clamp body 2 to provide more support. However, in practical applications, to prevent the platinum crucible from tipping over and spilling the liquid inside, the operator still needs to manually control the clamping force on the platinum crucible. Therefore, the clamping force will vary depending on the operator, and there is still a risk of leaving clamp marks on the platinum crucible. To further optimize the operator's operation of the crucible clamp body 2, the inner wall of the clamp handle 41 is provided with a placement groove 411. The outer wall of the handle 41 is provided with a through groove 412 communicating with the mounting groove 411. Both the mounting groove 411 and the through groove 412 are located between the connecting post 3 and the handle of the clamp 41. A movable member 5 is provided within the mounting groove 411. One end of the movable member 5 is movably connected to the inner wall of the mounting groove 411 and extends to the outside of the clamp handle 41 through the through groove 412. The other end of the movable member 5 is hinged to the end of a movable member 5 of another half-clamp 4. A snap-fit ​​member 6 is provided on the clamp handle 41. The snap-fit ​​member 6 selectively connects to the movable member 5 passing through the through groove 412, such as... Figure 7 , 8As shown, when adjusting the clamping position of the crucible clamp body 2 on the platinum crucible, the locking member 6 and the movable member 5 do not contact each other. After the position is adjusted, the locking member 6 is engaged, so that the locking member 6 and the movable member 5 are engaged, thus fixing the opening angle of the crucible clamp body 2. The movable member 5 consists of a toothed locking end 51 and a connecting rod 52 hinged to another movable member 5. The locking end 51 is provided with a connecting shaft 53 that is movably connected to the inner wall of the mounting groove 411. The locking end 51 is circular, and the portion of the locking end 51 extending to the outside of the through groove 412 selectively connects with the locking member 6. The locking member 6 consists of a connector 61 movably connected to the outer wall of the clamp handle 41, and a locking part 62 selectively connected to the locking end 51. The connector 61 is connected to the outer wall of the clamp handle 41 by a pin, allowing the locking member 6 to rotate relative to the clamp handle 41. The connector 61 is disposed on the locking part 62, which has teeth. The locking part 62 has an arc-shaped surface adapted to the outer wall of the locking end 51, and the teeth of the locking part 62 are located within the arc-shaped surface. When it is necessary to fix the opening angle of the crucible clamp body 2, it is only necessary to close the locking part 62 and the locking end 51 together. When the two are engaged, the locking end 51 will no longer rotate, thereby fixing the opening angle of the crucible clamp body 2. With the above structural design, the platinum crucible can be fixed by the movable part 5 and the snap-fit ​​part 6 when transferring it. The clamping force and opening angle can be adjusted so that the operator will not affect the opening angle of the crucible clamp body 2 when transferring the platinum crucible. This avoids the occurrence of clamping marks on the platinum crucible due to different clamping forces during the transfer process.

[0043] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0044] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0045] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A crucible tong assembly for a platinum crucible, characterized in that, include: Extended bracket (1) and crucible tongs body (2); The extended bracket (1) is used to transfer the platinum crucible from inside the high-temperature chamber to the door of the high-temperature chamber; The crucible tong body (2) is used to transfer the platinum crucible; The extended bracket (1) and the crucible tongs body (2) are both wrapped in platinum at the points where they contact the platinum crucible; The extended bracket (1) consists of a U-shaped bracket (12) provided at one end of the extended rod (11) and a handle provided at the other end of the extended rod (11). Platinum wire is wound on the U-shaped bracket (12), and the length of the extended rod (11) is L. The crucible clamp body (2) consists of two half clamps (4) movably connected by a connecting post (3). Each half clamp (4) consists of a clamp handle (41), a support section (42) located at one end of the clamp handle (41), and a gripping section (43) connected to the clamp handle (41) through the support section (42). The length of the clamp handle (41) is d, and d is less than L. The clamp handles (41) of the two half clamps (4) are movably connected by the connecting post (3).

2. The crucible clamp assembly for a platinum crucible according to claim 1, characterized in that, The clamp handle (41) is provided with a handle.

3. The crucible clamp assembly for a platinum crucible according to claim 1, characterized in that, The supporting section (42) is arc-shaped, and the cross-sections of the top and bottom surfaces of the supporting section (42) are both arc-shaped. The top surface of the supporting section (42) is a first arc-shaped surface (421) with an arc radius of r, and the bottom surface of the supporting section (42) is a second arc-shaped surface (422) with an arc radius of R, where r is less than R.

4. The crucible clamp assembly for a platinum crucible according to claim 3, characterized in that, The clamping section (43) extends from the end of the supporting section (42) toward the top surface of the supporting section (42) and away from the supporting section (42).

5. The crucible tong assembly for a platinum crucible according to claim 1, characterized in that, The inner wall of the clamp handle (41) is provided with a mounting groove (411), and the outer wall of the clamp handle (41) is provided with a through groove (412) communicating with the mounting groove (411). A movable part (5) is provided in the mounting groove (411). One end of the movable part (5) is movably connected to the inner wall of the mounting groove (411) and extends to the outside of the clamp handle (41) through the through groove (412). The other end of the movable part (5) is hinged to the end of the movable part (5) of another half clamp (4). A snap-fit ​​part (6) is provided on the clamp handle (41). When the crucible clamp body (2) is adjusted to the clamping position of the platinum crucible, the snap-fit ​​(6) separates from the movable part (5) that passes through the through slot (412); After the crucible clamp body (2) is adjusted to the clamping position of the platinum crucible, the snap-fit ​​part (6) is engaged, and the snap-fit ​​part (6) engages with the movable part (5).

6. The crucible tong assembly for a platinum crucible according to claim 5, characterized in that, The movable part (5) consists of a toothed snap-fit ​​end (51) and a connecting rod (52) hinged to another movable part (5). The snap-fit ​​end (51) is provided with a connecting shaft (53) that is movably connected to the inner wall of the mounting groove (411). The snap-fit ​​end (51) is circular.

7. The crucible tong assembly for a platinum crucible according to claim 6, characterized in that, The snap-fit ​​member (6) consists of a connector (61) movably connected to the outer wall of the pliers (41) and a snap-fit ​​portion (62) selectively connected to the snap-fit ​​end (51). The connector (61) is disposed on the snap-fit ​​portion (62), and the snap-fit ​​portion (62) is provided with teeth.

8. The crucible tong assembly for a platinum crucible according to claim 7, characterized in that, The snap-fit ​​part (62) is provided with an arc-shaped surface that is adapted to the outer wall of the snap-fit ​​end (51), and the teeth of the snap-fit ​​part (62) are located in the arc-shaped surface.

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