High temperature precious metal crucible pouring apparatus

Abstract

The utility model discloses a high temperature noble metal crucible pouring device, including fixed base and setting two standpikes of fixed base left and right, the top of fixed base is provided with the pouring base for placing the crucible, be provided with a pair of horizontal extension pivot of two sides standpikes on the pouring base, and two pivot coaxial setting, two standpikes are set up high and low, and the top of lower standpikes is provided with pouring motor, and the output shaft of pouring motor is connected with corresponding pivot, and the pivot of the other side is rotatably connected on higher standpikes, be provided with the clamping mechanism for fixing crucible on the pouring base, and the rear side of pouring base is provided with the fixture rest for fixing clamping mechanism, can pour the high temperature raw material in the crucible in time and stably, saves manpower, improves work efficiency and safety.

Description

Technical Field

[0001] This utility model relates to the field of chemical experimental equipment technology, specifically to a high-temperature precious metal crucible tilting device. Background Technology

[0002] Precious metal crucibles are containers made of precious metals such as platinum, rhodium, palladium, and gold, or their alloys, used for high-temperature, high-purity material processing. Among these, platinum crucibles and platinum-rhodium alloy crucibles are the most common. Currently, cleaning precious metal crucibles after molten salt crystal growth is a significant technical bottleneck. Cleaning precious metal crucibles requires not only high efficiency but also ensuring that the crucibles are not damaged. Mainstream cleaning techniques include natural cooling mechanical methods, rapid cooling and thermal shock methods, and chemical dissolution methods.

[0003] The natural cooling mechanical method requires cooling the crucible in the air for up to 6-8 hours, which is inefficient. Furthermore, since the crucible is made of platinum, subsequent mechanical impacts or drilling operations will inevitably cause scratches, dents, or deformations to the soft platinum crucible, significantly shortening its service life. According to statistics, the average service life is less than 20 times. At the same time, the debris introduced by the mechanical process will also contaminate the raw materials, affecting the recycling value.

[0004] Although the rapid cooling and thermal shock method saves cooling time by directly immersing the high-temperature crucible in water, the intense thermal stress generated can easily cause microcracks or permanent deformation in the crucible, increasing the failure probability by 300% and posing a safety risk of steam explosion. Repeated thermal cycling can also lead to a significant decrease in the mechanical properties of platinum materials.

[0005] Meanwhile, both of the above methods require the raw materials to be cooled before cleaning. However, low-temperature cleaning can easily cause the raw materials to stick to the crucible, increasing the difficulty of cleaning.

[0006] Chemical dissolution methods use acid or alkali solutions to dissolve residual molten salts. While this avoids mechanical damage, it has several drawbacks: the dissolution cycle can take 3-7 days, which cannot meet the needs of continuous production; strong acid or alkali environments cause slow and irreversible corrosion to platinum, resulting in a 0.1-0.2 mm reduction in crucible wall thickness with each treatment; this method also generates a large amount of hazardous waste liquid, leading to high environmental treatment costs, and the dissolved raw materials completely lose their recycling value, resulting in resource waste.

[0007] In recent years, high-temperature cooking methods have emerged, which use acidic solutes such as potassium pyrosulfate to dissolve and soften residual molten salts through high-temperature cooking. However, its applicability is limited, and it is only effective for specific molten salt systems. The process still takes 1-2 days, consumes a lot of energy, and is highly corrosive and dangerous. It also faces the dilemma of raw material non-recyclability and environmental pollution.

[0008] In addition, manual handling of high-temperature crucibles and molten salts above 1000℃ during high-temperature operations poses safety hazards, especially when pouring high-temperature raw materials, which can easily lead to dangerous situations such as material splashing and bubbling, posing extremely high risks. Therefore, there is an urgent need for a device that can automatically pour materials when they are at high temperatures. Utility Model Content

[0009] This utility model aims to solve the technical problems existing in the prior art, and innovatively proposes a high-temperature precious metal crucible tilting device, which can timely and stably tilt the high-temperature raw materials in the crucible, save manpower, and improve work efficiency and safety.

[0010] To achieve the above-mentioned objectives of this utility model, a high-temperature precious metal crucible tilting device is provided, comprising a fixed base and two columns disposed on the left and right sides of the fixed base. A tilting base for placing the crucible is disposed above the fixed base. A pair of rotating shafts extending horizontally toward the two columns are disposed on the tilting base, and the two rotating shafts are coaxially disposed. The two columns are disposed at different heights. A tilting motor is disposed on the top of the lower column, and the output shaft of the tilting motor is connected to the corresponding rotating shaft. The rotating shaft on the other side is rotatably connected to the higher column.

[0011] The tilting base is provided with a clamping mechanism for fixing the crucible, and a clamping support for fixing the clamping mechanism is provided on the rear side of the tilting base.

[0012] In the above scheme: the clamping mechanism includes a clamping drive, a body, a pair of connecting rods and a pair of grippers located above the tilting base, arranged sequentially from back to front; the clamping platform is provided with a fixing block for fixing the clamping drive.

[0013] The clamping drive and the pair of grippers are respectively fixedly installed on the rear and front sides of the machine body, and the pair of grippers and the pair of connecting rods are symmetrically arranged on the left and right sides of the machine body;

[0014] The machine body includes a first connecting plate and a second connecting plate spaced apart at the front and rear. A fixed rod is connected between the first connecting plate and the second connecting plate to form a frame structure. The clamping drive is a screw and nut mechanism. The screw of the clamping drive passes through the first connecting plate and is rotatably connected to the rear side of the second connecting plate. One end of a pair of connecting rods is hinged to the nut of the clamping drive, and the other end is respectively hinged to a pair of clamps.

[0015] In the above scheme, the machine body is also provided with a guide structure for guiding the nut.

[0016] In the above scheme: the guide structure includes guide rods located on both sides of the nut and guide sliders slidably mounted on the guide rods. The two ends of the guide rods are respectively fixed on the first connecting plate and the second connecting plate. The nut is fixedly connected to the guide slider through the connecting structure.

[0017] In the above scheme: anti-slip blocks are provided on the side of the clamping ends of the pair of grippers that are close to each other, and friction parts are provided on the side of the anti-slip blocks that are in contact with the crucible.

[0018] In the above scheme: the gripper is made of ultra-heat resistant alloy, and the anti-slip block is made of 253MA special stainless steel.

[0019] In the above scheme: a material container is provided on the fixed base, located directly below the tilting base.

[0020] In the above scheme: the tilting motor is a variable frequency geared motor.

[0021] In the above scheme: the top of the tilting base is provided with a groove for placing the crucible.

[0022] In summary, due to the adoption of the above technical solutions, the beneficial effects of this utility model are as follows: the tilting base is used to place the crucible, and the tilting motor drives the tilting base to rotate and tilt, thereby pouring out the raw materials in the crucible. The clamps can clamp the crucible before tilting, greatly reducing the occurrence of crucible movement, improving the stability of the crucible, and ensuring the effective tilting of the crucible; the structure is simple, the overall layout is compact, and the manufacturing cost is low; it supports remote control, has a compact structure, requires little space for operation and hoisting, and can still ensure operational safety and crucible integrity in high-temperature environments; it is environmentally friendly, avoiding chemical pollution and significantly reducing energy consumption; the tilting is operated by the equipment, without the need for workers to approach, and the speed and magnitude of the variable frequency reduction motor can be appropriately adjusted according to the tilting speed of the tilting base and the pouring condition of the raw material molten material to stabilize the pouring speed, minimize the splashing of raw material molten material, and improve safety. Attached Figure Description

[0023] Figure 1 This is a perspective view of the present invention.

[0024] Figure 2 yes Figure 1 The right view.

[0025] Figure 3 This is a 3D diagram of the clamping mechanism. Detailed Implementation

[0026] The present invention will be further described below with reference to embodiments and accompanying drawings:

[0027] like Figures 1-3As shown, a high-temperature precious metal crucible tilting device includes a fixed base 1, a tilting base 7 for placing a crucible 10 is disposed above the fixed base 1, and a pair of coaxial rotating shafts 8 are respectively disposed on the left and right sides of the tilting base 7. Two columns 2 are disposed on the fixed base 1, one higher and one lower. The lower column 2 is a support column 6, and its top is bent away from the fixed base 1 to form a platform 4 for placing a tilting motor 5. The output shaft of the tilting motor 5 is disposed towards the other column 2 and connected to the rotating shaft 8 on one side. The rotating shaft 8 on the other side is rotatably connected to the higher column 2, and the column 2 is provided with a bearing 9 for mounting the rotating shaft 8.

[0028] A material container 3 is provided on the fixed base 1, located directly below the tilting base 7. The top of the tilting base 7 is provided with a groove for placing the crucible 10, and the tilting base 7 is provided with a clamping mechanism for fixing the crucible 10.

[0029] The clamping mechanism includes a clamp, a clamp drive 17, and a clamp support 18. The clamp support 18 is located on the rear side of the tilting base 7. A fixing block 16 for fixing the clamp drive 17 is provided on the clamp support 18. The clamp includes a body, a pair of connecting rods 13, and a pair of grippers 12 located above the tilting base 7. The body includes a first connecting plate 14 and a second connecting plate 22 spaced apart. A fixing rod 19 connects the first connecting plate 14 and the second connecting plate 22, forming a frame structure. The clamp drive 17 is fixedly installed on the rear side of the body. The clamp drive 17 is a screw-nut mechanism. The screw 15 of the clamp drive 17 passes through the first connecting plate 14 and rotatably connects to the rear side of the second connecting plate 22, thus fixing the clamp drive 17. The rear ends of the pair of grippers 12 are symmetrically hinged to the front side of the second connecting plate 22, and the front ends of the grippers 12 are the clamping ends. A pair of connecting rods 13 are hinged at one end to the nut 23 of the clamping drive 17, and at the other end to a pair of grippers 12. The clamping drive 17 drives the lead screw to rotate, thereby moving the nut 23 back and forth, so that the grippers 12 can be opened or closed via the connecting rods 13. Anti-slip blocks 11 are provided on the side of the gripping ends of the pair of grippers 12 that are close to each other. The side of the anti-slip block 11 that contacts the crucible 10 has a friction part. In this embodiment, the friction part is a serrated anti-slip tooth. To improve the durability of the device, the grippers 12 are made of 310S austenitic heat-resistant stainless steel, and the anti-slip blocks 11 are made of 253MA special stainless steel. This not only improves the service life of the grippers 12, but also ensures that the crucible 10 is firmly clamped and prevents excessive compression of the crucible 10.

[0030] The machine body is also provided with a guide structure for guiding the nut 23. The guide structure includes guide rods 20 located on both sides of the nut 23 and guide sliders 21 slidably mounted on the guide rods 20. The two ends of the guide rods 20 are respectively fixed on the first connecting plate 14 and the second connecting plate 22. The nut 23 is fixedly connected to the guide sliders 21 through the connecting structure.

[0031] During operation, first prepare to collect the residue. Place the container 3 at the designated position on the fixed base 1. Then, lower the crucible 10 containing the molten raw material to be recovered into the tilting base 7. Drive the clamping jaws 12 via the clamping drive 17, causing them to abut against the left and right sides of the crucible 10, thus securing it. Turn on the tilting motor 5 and check its speed. Initially, set the speed knob to its minimum. Then, turn on the motor. The tilting base 7 will begin to tilt towards the container 3. Adjust the speed of the tilting motor 5 according to its tilting speed and the pouring conditions to ensure stable pouring speed and prevent splashing. Therefore, the entire tilting process can be remotely controlled, eliminating the need for manual operation. This reduces the workload of workers and avoids the dangers of splashing or bubbling during manual operation, thus improving safety.

Claims

1. A high-temperature precious metal crucible tilting device, characterized in that: The system includes a fixed base (1) and two columns (2) located on the left and right sides of the fixed base (1). A tilting base (7) for placing a crucible (10) is provided above the fixed base (1). A pair of rotating shafts (8) extending horizontally toward the two columns (2) are provided on the tilting base (7). The two rotating shafts (8) are coaxially arranged. The two columns (2) are arranged at different heights. A tilting motor (5) is provided on the top of the lower column (2). The output shaft of the tilting motor (5) is connected to the corresponding rotating shaft (8). The rotating shaft (8) on the other side is rotatably connected to the higher column (2). The tilting base (7) is provided with a clamping mechanism for fixing the crucible (10), and a clamping support (18) for fixing the clamping mechanism is provided on the rear side of the tilting base (7).

2. The high-temperature precious metal crucible tilting device according to claim 1, characterized in that: The clamping mechanism includes a clamping drive (17), a body, a pair of connecting rods (13) and a pair of grippers (12) located above the tilting base (7) arranged from back to front. The clamping platform (18) is provided with a fixing block (16) for fixing the clamping drive (17). The clamp drive (17) and the pair of grippers (12) are fixedly installed on the rear and front sides of the machine body, respectively, and the pair of grippers (12) and the pair of connecting rods (13) are symmetrically arranged on the left and right sides of the machine body; The machine body includes a first connecting plate (14) and a second connecting plate (22) spaced apart at the front and rear. A ring of fixed rods (19) is connected between the first connecting plate (14) and the second connecting plate (22) to form a frame structure. The clamp driving component (17) is a lead screw and nut mechanism. The lead screw (15) of the clamp driving component (17) passes through the first connecting plate (14) and is rotatably connected to the rear side of the second connecting plate (22). One end of a pair of connecting rods (13) is hinged to the nut (23) of the clamp driving component (17), and the other end is respectively hinged to a pair of jaws (12).

3. The high-temperature precious metal crucible tilting device according to claim 2, characterized in that: The body is also provided with a guide structure for guiding the nut (23).

4. The high-temperature precious metal crucible tilting device according to claim 3, characterized in that: The guide structure includes guide rods (20) located on both sides of the nut (23) and guide sliders (21) slidably mounted on the guide rods (20). The two ends of the guide rods (20) are respectively fixed on the first connecting plate (14) and the second connecting plate (22). The nut (23) is fixedly connected to the guide sliders (21) through the connecting structure.

5. The high-temperature precious metal crucible tilting device according to claim 2, characterized in that: Anti-slip blocks (11) are provided on the side of the clamping ends of the pair of grippers (12) that are close to each other, and friction parts are provided on the side of the anti-slip blocks (11) that are in contact with the crucible (10).

6. The high-temperature precious metal crucible tilting device according to claim 5, characterized in that: The gripper (12) is made of ultra-heat resistant alloy, and the anti-slip block (11) is made of 253MA special stainless steel.

7. The high-temperature precious metal crucible tilting device according to claim 1, characterized in that: The fixed base (1) is provided with a material container (3) located directly below the tilting base (7).

8. The high-temperature precious metal crucible tilting device according to claim 1, characterized in that: The tilting motor (5) is a variable frequency speed reduction motor.

9. A high-temperature precious metal crucible tilting device according to claim 1, characterized in that: The top of the tilting base (7) is provided with a groove for placing the crucible (10).

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