Low-boiling-point metal distillation and purification device

Abstract

The utility model relates to the technical field of metal smelting, and particularly discloses a low-boiling-point metal distillation and purification device which comprises a tank body, a feeding pipe arranged on the outer side of the tank body, a discharging pipe arranged at the bottom of the tank body and a heating device arranged outside the tank body. The magnetic coupling is coaxially connected with a stirring shaft; the stirring shaft is positioned in the tank body; a centrifugal disc, a material receiving disc and a stirring paddle are sequentially arranged on the stirring shaft from top to bottom, the centrifugal disc is located at the position close to the top of the tank body, and the stirring paddle is located at the position close to the bottom of the tank body; the outer side of the tank body is further provided with a collecting pipe communicated with the material receiving disc, and the feeding pipe is located below the material receiving disc; the heating device comprises a first heating part covering the upper gas phase space in the tank body, a second heating part covering the middle upper part of the liquid level in the tank body, and a third heating part covering the middle lower part of the liquid level in the tank body; the problems that heating is not uniform in the distillation process, and impurities generated in the distillation process cannot be effectively separated are solved.

Description

Technical Field

[0001] This utility model relates to the field of metal smelting technology, specifically to a low-boiling-point metal distillation and purification device. Background Technology

[0002] In many fields such as metallurgy, aerospace, and new energy, distillation purification of low-boiling-point metals is often required. Currently, a series of problems exist in the distillation purification process of low-boiling-point metals. On the one hand, traditional distillation purification equipment suffers from poor thermal uniformity during heating, failing to achieve comprehensive and uniform heating of the material. This results in some materials being overheated while others are underheated, significantly impacting evaporation efficiency and purification quality. On the other hand, impurities generated during distillation cannot be effectively separated and collected, re-mixing into the material and reducing purification efficiency, failing to meet the demands of high-precision production. Furthermore, the distillation purification of low-boiling-point metals cannot effectively lower the boiling point of the material, hindering production efficiency and posing certain safety hazards.

[0003] Therefore, there is an urgent need for a device that can effectively solve the above problems and achieve efficient, safe, and high-quality distillation and purification of low-boiling-point metals. Utility Model Content

[0004] The purpose of this invention is to provide a low-boiling-point metal distillation and purification device, which solves the problems of uneven heating and inability to effectively separate impurities generated during the distillation process.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A low-boiling-point metal distillation and purification apparatus includes a tank body, an inlet pipe located outside the tank body, an outlet pipe located at the bottom of the tank body, and a heating device located outside the tank body. A driving device is located at the top of the tank body, and the driving device is rotatably connected to a magnetic coupling. The magnetic coupling is coaxially connected to a stirring shaft located inside the tank body. A centrifugal disc, a receiving disc, and a stirring paddle are arranged sequentially from top to bottom on the stirring shaft. The centrifugal disc is located near the top of the tank body, and the stirring paddle is located near the bottom of the tank body. A collection pipe communicating with the receiving disc is also located outside the tank body, and the inlet pipe is located below the receiving disc. The heating device includes a first heating section, a second heating section, and a third heating section. The first heating section covers the upper gas phase space inside the tank body, the second heating section covers the upper middle part of the liquid surface inside the tank body, and the third heating section covers the lower middle part of the liquid surface inside the tank body.

[0007] A further technical solution is that the centrifugal disc has a conical structure, and the edge of the conical surface has a gap with the inner wall of the tank. The centrifugal disc has multiple blades evenly distributed along the circumference. The blades are inclined from the center of the centrifugal disc to the edge of the centrifugal disc, and the blades are connected to the rotation axis of the center of the centrifugal disc. The receiving disc is arranged in a ring below the centrifugal disc. The receiving disc is inclined. The collecting pipe is also inclined. The lower end of the receiving disc is sealed and connected to the upper end of the collecting pipe.

[0008] A further technical solution is that an inert gas inlet pipe and a vacuum inlet pipe are respectively provided on both sides of the top of the tank, and both the inert gas inlet pipe and the vacuum inlet pipe are connected to the inside of the tank.

[0009] A further technical solution is that one end of the discharge pipe extends to the center of the bottom of the tank, and the other end is located outside the tank and connected to a vacuum suction device.

[0010] A further technical solution is that the first heating part, the second heating part, and the third heating part are all connected to a temperature sensor and a temperature controller.

[0011] A further technical solution is that the inert gas inlet pipe is equipped with a flow control valve.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This utility model provides a low-boiling-point metal distillation and purification device. By dividing the heating device into three gradients—specifically, a first heating section, a second heating section, and a third heating section—uniform heating is achieved to improve evaporation efficiency, thereby increasing purification efficiency and purity. The synergistic effect of an inverted conical centrifugal disc and an inclined receiving disc reduces the residual impurity rate. Combined with a magnetic coupling and a high-vacuum inert gas protection system, the risks of leakage and explosion are completely eliminated. Furthermore, the vacuum suction discharge design reduces high-risk operations, ultimately achieving efficient, safe, and automated purification of low-boiling-point metals. Attached Figure Description

[0014] Figure 1 A schematic diagram of a low-boiling-point metal distillation and purification device provided by this utility model;

[0015] Figure 2 A schematic diagram of the internal structure of the device provided by this utility model;

[0016] Figure 3 This is a cross-sectional structural diagram of another internal structure of the device provided by this utility model.

[0017] Icons: 1-Tank body, 2-Feed pipe, 3-Drive device, 4-Magnetic coupling, 5-Agitator shaft, 6-Centrifuge disc, 7-Receiving tray, 8-Agitator blade, 9-Collection pipe, 10-First heating section, 11-Second heating section, 12-Third heating section, 13-Inert gas connection pipe, 14-Vacuum connection pipe, 15-Top cover, 16-Temperature sensor, 17-Discharge pipe, 18-Centrifuge cover plate, 19-Blade. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0019] Example 1

[0020] A low-boiling-point metal distillation purification apparatus, such as Figure 1 and Figure 2 As shown, the device includes a tank body 1, an inlet pipe 2 located outside the tank body 1, an outlet pipe 17 located at the bottom of the tank body 1, and a heating device located outside the tank body 1. A drive device 3 is located at the top of the tank body 1, and a magnetic coupling 4 is rotatably connected to the drive device 3. A stirring shaft 5 is coaxially connected to the magnetic coupling 4 and is located inside the tank body 1. A centrifugal disc 6, a receiving disc 7, and a stirring impeller are sequentially arranged on the stirring shaft 5 from top to bottom. The centrifugal disc 6 is located near the tank body 1. At the top, the stirring impeller is located near the bottom of the tank 1; the outside of the tank 1 is also provided with a collection pipe 9 communicating with the receiving tray 7, and the feed pipe 2 is located below the receiving tray 7; the heating device includes a first heating part 10, a second heating part 11 and a third heating part 12, the first heating part 10 covers the upper gas phase space inside the tank 1, the second heating part 11 covers the upper middle part of the liquid surface inside the tank 1, and the third heating part 12 covers the lower middle part of the liquid surface inside the tank 1.

[0021] In the embodiments of this utility model, such as Figure 3As shown, the tank 1 has a top opening and a top cover 15 is provided on the top of the tank 1. The top cover 15 is sealed to the tank 1 by a flange. A drive device 3 is also provided above the top cover 15 of the tank 1. The drive device 3 is a motor. A magnetic coupling 4 is also connected to the bottom of the motor. The magnetic coupling 4 is fixedly installed on the top of the top cover 15. A mounting seat is provided at the center of the top cover 15. The magnetic coupling 4 is fixedly installed on the mounting seat. The output shaft of the magnetic coupling 4 extends through the mounting seat to the bottom of the tank 1. Inside the tank 1, the output shaft of the magnetic coupling 4 is coaxially connected to a stirring device through the coupling. The stirring device includes a stirring shaft 5 and a stirring paddle 8. The stirring shaft 5 is coaxially connected to the output shaft. The stirring paddle 8 is located at one end of the stirring shaft 5 and is located near the bottom of the tank 1. In one embodiment, the tank 1 contains a conveying device. The output shaft is also equipped with a centrifugal cover plate 6, which is located above the coupling and has a conical structure. The top of the centrifugal cover plate 6 is fixedly connected to the top cover 15. The surface of the conical surface of the centrifugal cover plate 6 is a smooth surface. Multiple connecting plates are evenly distributed around the circumference on the bottom surface of the conical surface. Below the centrifugal cover plate 6 and on the stirring shaft 5, from top to bottom, are arranged a centrifugal disc 6, a receiving disc 7, and a stirring paddle 8. The centrifugal disc 6 is located at the other end of the stirring shaft 5 and is located below the coupling. The receiving disc 7 is located below the centrifugal disc 6. The stirring paddle 8 is located at the other end of the stirring shaft 5 and is located inside the tank 1 near the bottom of the tank 1. A collection pipe 9 communicating with the receiving disc 7 is provided on one side outside the tank 1. A feed pipe 2 is provided on the other side outside the tank 1 and is located below the receiving disc 7 on the outside of the tank 1.

[0022] Furthermore, a heating device is provided outside the tank body 1. The heating device includes a first heating section 10, a second heating section 11, and a third heating section 12. The heating power of the first heating section 10 is smaller than that of the second heating section 11 and the third heating section 12. Outside the tank body 1, the first heating section 10 covers the upper gas phase space inside the tank body 1, that is, the first heating section 10 is responsible for heating and keeping warm the area above the liquid level of the material inside the tank body 1. The second heating section 11 covers the upper middle part of the liquid surface inside the tank body 1, that is, the second heating section 11 is responsible for heating and keeping warm the upper middle part of the area between the liquid level of the material inside the tank body 1 and the bottom of the tank body 1. The third heating section 12 covers the lower middle part of the liquid surface inside the tank body 1, that is, the third heating section 12 is responsible for heating and keeping warm the area between the liquid level of the material inside the tank body 1 and the bottom of the tank body 1. The lower middle part between the bottom and the center is heated and kept warm. The device of this utility model divides the heating device of the tank 1 into three parts, and the area to be heated by each heating part is different. However, after all the heating parts are assembled, the entire material in the tank 1 is heated and kept warm. In this embodiment, the heating power of the first heating part 10 can be set to 30%-50% of the heating power of the second heating part 11 and the third heating part 12. The temperature setting value of the first heating part 10 can also be set to be 50-100°C lower than the boiling point of the material. Thus, the low temperature insulation of the first heating part 10 can force impurities to crystallize and solidify in the tank 1. The second heating part 11 and the third heating part 12 fully cover the liquid phase and heat efficiently, which can avoid local overheating and improve the evaporation efficiency.

[0023] In one embodiment, the centrifugal disc 6 is configured as a conical structure, and the edge of the conical surface of the centrifugal disc 6 has a gap with the inner wall of the tank 1. The disc body of the centrifugal disc 6 is provided with multiple blades 19 evenly distributed along the circumference. The blades 19 are inclined from the center of the centrifugal disc 6 to the edge of the centrifugal disc 6, and the blades 19 are connected to the rotation axis of the center of the centrifugal disc 6. The receiving disc 7 is arranged in a ring below the centrifugal disc 6. The receiving disc 7 is inclined, and the collection pipe 9 is also inclined. The lower end of the receiving disc 7 is sealed and connected to the higher end of the collection pipe 9. The centrifugal disc 6 can directionally throw gaseous impurities into the tank wall, and the gaseous impurities then flow into the receiving disc 7. The impurity removal structure of the centrifugal disc 6 can also prevent scale formation on the tank wall. The limiting of the cone angle and gap of the centrifugal disc 6 can prevent impurities from rebounding and prevent impurities from falling back into the liquid phase. The limiting setting of the tilt angle of the receiving disc 7 can effectively catch impurities and guide gaseous impurities to flow into the collection pipe 9, thereby reducing the amount of impurities remaining.

[0024] In this embodiment of the invention, an inert gas inlet pipe 13 and a vacuum inlet pipe 14 are respectively provided on both sides of the top of the tank 1. Both the inert gas inlet pipe 13 and the vacuum inlet pipe 14 are connected to the inside of the tank 1. A flow control valve is configured on the inert gas inlet pipe 13 and it is connected to the argon gas supply system. The vacuum inlet pipe 14 is connected to a two-stage vacuum unit, and a vacuum is injected into the tank 1 through the vacuum inlet pipe 14. Thus, the tank is in a vacuum state during operation. After a tank of material is distilled using the low-boiling-point metal distillation purification device provided by this invention, a protective inert gas can be injected into the tank 1 through the inert gas inlet pipe 13 to restore the pressure inside the tank 1 to atmospheric pressure. Furthermore, one end of the discharge pipe 17 extends to the center of the bottom of the tank 1, and the other end is located outside the tank 1 and connected to a vacuum suction device. Thus, after distillation, a protective inert gas is injected into the tank 1 through the inert gas inlet pipe 13, and the distilled and purified material is drawn from the discharge pipe 17 to the outside of the tank 1 through the vacuum suction device. This achieves a fully enclosed operation and avoids the risk of explosion from metal contact with air.

[0025] In this embodiment of the invention, the first heating part 10, the second heating part 11 and the third heating part 12 of the heating device are all connected to a temperature sensor 16 and a temperature controller. After the heating temperature is input, the temperature controller achieves a balance between heating power and temperature by detecting the real-time temperature and adjusting the current.

[0026] Although the present invention has been described herein with reference to several illustrative embodiments, it should be understood that many other modifications and implementations can be devised by those skilled in the art, which will fall within the scope and spirit of the principles disclosed herein. More specifically, various variations and modifications can be made to the components and / or layout of the subject matter combination within the scope of the drawings and claims disclosed herein. Besides variations and modifications to the components and / or layout, other uses will be apparent to those skilled in the art.

Claims

1. A low-boiling-point metal distillation purification apparatus, comprising a tank (1), an inlet pipe (2) disposed outside the tank (1), an outlet pipe (17) disposed at the bottom of the tank (1), and a heating device disposed outside the tank (1), characterized in that, The top of the tank (1) is provided with a driving device (3), the driving device (3) is rotatably connected to a magnetic coupling (4), the magnetic coupling (4) is coaxially connected to a stirring shaft (5), and the stirring shaft (5) is located inside the tank (1). A centrifugal (6) disc, a receiving disc (7) and a stirring paddle (8) are arranged sequentially from top to bottom on the stirring shaft (5). The centrifugal (6) disc is located near the top of the tank (1), and the stirring paddle (8) is located near the bottom of the tank (1). The tank body (1) is also provided with a collection pipe (9) that communicates with the receiving tray (7) on the outside, and the feed pipe (2) is located below the receiving tray (7); The heating device includes a first heating part (10), a second heating part (11) and a third heating part (12). The first heating part (10) covers the upper gas phase space inside the tank (1), the second heating part (11) covers the upper middle part of the liquid surface inside the tank (1), and the third heating part (12) covers the lower middle part of the liquid surface inside the tank (1).

2. The low-boiling-point metal distillation and purification apparatus according to claim 1, characterized in that, The centrifugal (6) disc is a conical structure, and the edge of the conical surface is provided with a gap between it and the inner wall of the tank (1). The centrifugal (6) disc is provided with multiple blades (19) evenly distributed along the circumference. The blades (19) are inclined from the center of the centrifugal (6) disc to the edge of the centrifugal (6) disc, and the blades (19) are connected to the rotation axis of the center of the centrifugal (6) disc. The receiving tray (7) is arranged in a ring below the centrifugal (6) disc. The receiving tray (7) is inclined, and the collecting pipe (9) is also inclined. The lower end of the receiving tray (7) is sealed and connected to the upper end of the collecting pipe (9).

3. The low-boiling-point metal distillation and purification apparatus according to claim 1, characterized in that, The top two sides of the tank (1) are respectively provided with an inert gas pipe (13) and a vacuum pipe (14), and both the inert gas pipe (13) and the vacuum pipe (14) are connected to the inside of the tank (1).

4. The low-boiling-point metal distillation and purification apparatus according to claim 1, characterized in that, One end of the discharge pipe (17) extends to the center of the bottom of the tank (1), and the other end is located outside the tank (1) and connected to a vacuum suction device.

5. The low-boiling-point metal distillation and purification apparatus according to claim 1, characterized in that, The first heating part (10), the second heating part (11) and the third heating part (12) are all connected to a temperature sensor (16) and a temperature controller.

6. The low-boiling-point metal distillation and purification apparatus according to claim 3, characterized in that, The inert gas inlet pipe (13) is equipped with a flow control valve.

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