A low-melting-point electrolyte melting crucible convenient to clean
By incorporating a stainless steel shell, a graphite inner liner, and metal wires within the crucible, combined with a DLC coating, a metal ring, and a handle design, the problem of removing and cleaning the crucible at high temperatures is solved, achieving stable clamping and uniform heating.
Patent Information
- Application Number
- CN202521476718.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-15
- Publication Date
- 2026-06-19
- Estimated Expiration
- 2035-07-15
AI Technical Summary
Existing crucibles have high residual temperatures after the low-melting-point electrolyte melts, making them difficult to remove from the support and difficult to clean. In particular, the electrolyte solidifies on the inner wall after the temperature drops, making cleaning even more difficult.
A crucible comprising a stainless steel shell and a graphite inner liner has been designed. The inner wall of the graphite inner liner is coated with DLC, the outer wall is wound with metal wire, and a metal ring and handle are provided on the shell for easy handling and cleaning.
This technology enables stable removal of the crucible even at high temperatures, preventing sticking and improving the ease of cleaning and uniform heating effect.
Smart Images

Figure CN224382110U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of crucible technology, and in particular to a crucible for melting low-melting-point electrolytes that is easy to clean. Background Technology
[0002] Crucibles are an important component of chemical instruments. They are containers for melting and refining liquid metals, as well as for heating and reacting solids and liquids, and are fundamental to ensuring the smooth progress of chemical reactions.
[0003] Existing crucibles, after melting low-melting-point electrolytes, usually retain a high residual temperature, making it inconvenient to remove them from the support for cleaning. Furthermore, the electrolyte solidifies on the inner wall of the crucible after the temperature drops, further complicating the cleaning process. These shortcomings negatively impact the use of crucibles. To address these deficiencies, we propose a crucible for melting low-melting-point electrolytes that is easy to clean. Utility Model Content
[0004] The main objective of this invention is to provide a crucible for melting low-melting-point electrolytes that is easy to clean, which can effectively solve the problems in the background art.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] A crucible for melting low-melting-point electrolytes that is easy to clean includes a stainless steel shell, a graphite inner liner inside the stainless steel shell, multiple sets of metal wires between the outer wall of the graphite inner liner and the inner wall of the stainless steel shell, a metal ring at the upper end of the stainless steel shell, handles on both sides of the upper outer wall of the metal ring, and lugs around the lower outer wall of the metal ring.
[0007] Preferably, the lower end of the metal ring is welded and fixedly connected to the upper end of the stainless steel shell.
[0008] Preferably, the inner wall of the graphite liner is provided with a DLC coating.
[0009] Preferably, the metal wire is evenly wound around the outer wall of the graphite inner liner.
[0010] Preferably, a through hole is provided in the middle of both sets of handles.
[0011] Preferably, the lower end of each of the four sets of ear loops is provided with a slot.
[0012] Compared with the prior art, the present invention has the following beneficial effects:
[0013] In this invention, the metal ring and handle make it easy for people to remove the crucible from the support using clamps. Even if the crucible is still hot, it can still be easily removed for cleaning. The clamps can be locked in the opening between the two sets of handles to prevent slippage and make the clamping operation more stable. The DLC coating inside the graphite liner makes the cleaning process more convenient and prevents sticking that would make cleaning difficult.
[0014] In this invention, the metal wires allow the crucible to be heated more evenly. The metal wires are wound evenly and at equal intervals around the outer wall of the graphite inner liner, which better and more evenly conducts the temperature during heating to the inner wall of the crucible, resulting in better heating of the electrolyte inside the crucible. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0016] Figure 2 This is a schematic diagram of the metal ring structure of this utility model;
[0017] Figure 3 This is a schematic diagram of the disassembled structure of the graphite inner liner and stainless steel shell of this utility model.
[0018] In the picture: 1. Stainless steel shell; 2. Metal ring; 3. Hanging lug; 4. Handle; 5. Graphite inner liner; 6. Metal wire. Detailed Implementation
[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0020] like Figures 1-3 As shown, a crucible for melting low-melting-point electrolytes that is easy to clean includes a stainless steel shell 1. A graphite inner liner 5 is disposed inside the stainless steel shell 1. The low-melting-point electrolyte is heated inside the graphite inner liner 5. The inner wall of the graphite inner liner 5 is coated with a DLC coating, which prevents the heated substance from adhering to the inner wall of the graphite inner liner 5, facilitating cleaning. Multiple sets of metal wires 6 are disposed between the outer wall of the graphite inner liner 5 and the inner wall of the stainless steel shell 1. The metal wires 6 are evenly wound around the outer wall of the graphite inner liner 5, making heat conduction more uniform and ensuring more even heating of the substance inside the graphite inner liner 5. A metal ring 2 is disposed at the upper end of the stainless steel shell 1, and the lower end of the metal ring 2 is welded and fixedly connected to the upper end of the stainless steel shell 1. The metal ring 2 facilitates the clamping operation of the crucible.
[0021] like Figures 1-3As shown, handles 4 are provided on both sides of the upper outer wall of the metal ring 2. The handles 4 make it easy to remove the crucible from the support. There are through holes in the middle of the two sets of handles 4. The through holes allow the clamps to be better locked and prevent slippage. There are hanging ears 3 around the lower outer wall of the metal ring 2. There are slots at the lower ends of the four sets of hanging ears 3. The hanging ears 3 make it easy to be locked on the support for heating.
[0022] It should be noted that this utility model is a crucible for melting low-melting-point electrolytes that is easy to clean. In use, the four sets of lugs 3 on the lower outer wall of the metal ring 2 are placed on the upper end of the heating bracket, and the slots at the lower end of the four sets of lugs 3 are locked on the bracket to support the crucible. After heating is finished, the outer wall of the metal ring 2 is clamped with a clamp, and when lifted, it will contact the lower end of the handle 4. Alternatively, the clamp can be used to clamp the crucible from the top in the middle of the opening between the two sets of handles 4 to lift it up, which facilitates the cleaning of the inner wall of the graphite inner liner 5 inside the stainless steel shell 1. The DLC coating on the inner wall of the graphite inner liner 5 can prevent adhesion, making the cleaning process more convenient.
[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A crucible for melting low-melting-point electrolytes that is easy to clean, comprising a stainless steel shell (1), characterized in that: The stainless steel shell (1) is provided with a graphite inner liner (5). Multiple sets of metal wires (6) are provided between the outer wall of the graphite inner liner (5) and the inner wall of the stainless steel shell (1). A metal ring (2) is provided at the upper end of the stainless steel shell (1). Handles (4) are provided on both sides of the upper outer wall of the metal ring (2). Lugs (3) are provided around the lower outer wall of the metal ring (2).
2. The easy-to-clean crucible for melting low-melting-point electrolytes according to claim 1, characterized in that: The lower end of the metal ring (2) is welded and fixedly connected to the upper end of the stainless steel shell (1).
3. The easy-to-clean crucible for melting low-melting-point electrolytes according to claim 1, characterized in that: The inner wall of the graphite liner (5) is provided with a DLC coating.
4. The easy-to-clean crucible for melting low-melting-point electrolytes according to claim 1, characterized in that: The metal wire (6) is evenly wound around the outer wall of the graphite inner liner (5).
5. The easy-to-clean crucible for melting low-melting-point electrolytes according to claim 1, characterized in that: Both sets of handles (4) have through holes in the middle.
6. The easy-to-clean crucible for melting low-melting-point electrolytes according to claim 1, characterized in that: The lower end of each of the four sets of ear loops (3) is provided with a slot.
