Multi-stage evaporator for alkali metal purification

Abstract

The utility model provides a multi-stage evaporator for alkali metal purification, which belongs to the technical field of metal purification and comprises a purification pipe, a crucible, a heating sleeve, a gas supply component, a plurality of collecting sleeves and a plurality of driving rods. The heating sleeve slidably sleeves the outer side of the purification pipe and is used for heating the purification pipe at the corresponding position. The gas supply assembly is communicated with the purification pipe and is used for enabling gas gasified in the crucible and gas heated by the heating sleeve and gasified again to flow along the purification pipe. The multiple collecting sleeves are slidably arranged in the purification pipe in a sleeved mode and arranged at certain intervals in the length direction of the purification pipe. The plurality of driving rods are in one-to-one correspondence with the collecting sleeves, one ends of the driving rods are connected to the collecting sleeves, and the driving rods drive the collecting sleeves to slide along the purification pipe so as to collect metal substances attached to the purification pipe and the collecting sleeves. According to the multi-stage evaporator for alkali metal purification, provided by the utility model, various alkali metals can be conveniently purified and recycled, the structure is relatively simple, and the efficiency is relatively high.

Description

Technical Field

[0001] The utility model belongs to the technical field of metal purification, and more specifically relates to a multi-stage evaporator used for alkali metal purification. Background Art

[0002] Alkali metals and alkaline earth metals are widely present in people's daily lives, and materials containing alkali metals or alkaline earth metals are widely used in today's society. For example, magnesium alloy materials have the advantages of light weight and high strength, and their ability to withstand impact loads is greater than that of aluminum alloys. They are used in aviation, aerospace, transportation, chemical industry and other industrial fields; compounds containing lithium or sodium elements can be used as battery positive electrode materials and are widely used in energy storage batteries, power batteries and supercapacitors.

[0003] However, in the actual application process, there will be a mixture of multiple alkali metals. In order to facilitate subsequent use, the alkali metals need to be purified. Different types of alkali metals have different vaporization temperatures. By reasonably controlling the temperature to vaporize a specific alkali metal, the purpose of purification is finally achieved. However, the existing device structures are relatively complex, involving many steps, and the purification efficiency is low, which is not convenient for multiple use. Utility Model Content

[0004] The utility model aims to provide a multi-stage evaporator for alkali metal purification, aiming to solve the problems of low efficiency of alkali metal purification and inconvenience of multiple use.

[0005] To achieve the above object, the technical solution adopted by the utility model is: to provide a multi-stage evaporator for alkali metal purification, comprising:

[0006] Purification tube;

[0007] A crucible connected to the purification tube, wherein the crucible is used to heat and vaporize the alkali metal;

[0008] A heating sleeve, a sliding sleeve is arranged on the outside of the purification tube, and the heating sleeve is used to heat the purification tube at a corresponding position;

[0009] A gas supply assembly connected to the purification tube, the gas supply assembly is used to make the gas vaporized from the crucible and the gas heated by the heating jacket and vaporized again flow along the purification tube;

[0010] A plurality of collecting sleeves, the sliding sleeves are arranged in the purification tube, and the plurality of collecting sleeves are arranged at a certain distance along the length direction of the purification tube;

[0011] A plurality of driving rods correspond to the collecting sleeves one by one, one end of each driving rod is connected to the collecting sleeve, and the driving rod drives the collecting sleeve to slide along the purification tube to collect metal substances attached to the purification tube and the collecting sleeve.

[0012] In a possible implementation, a hook is provided at the end of the driving rod, and the hook is clamped on the collecting sleeve to drive the collecting sleeve to move.

[0013] In a possible implementation, a connecting sleeve is fixed to the inner wall of the collecting sleeve, the connecting sleeve cooperates with the collecting sleeve to collect metal substances, and the hook is connected to the connecting sleeve.

[0014] In a possible implementation, the connecting sleeve extends from the collecting sleeve toward the air inlet side of the purification tube, and a collecting trough for collecting metal substances is formed between the connecting sleeve and the collecting sleeve.

[0015] In a possible implementation manner, a temperature sensor is installed on the connecting sleeve.

[0016] In a possible implementation, a cooling fan for cooling the purification tube is provided on the outer side of the purification tube.

[0017] In a possible implementation, the cooling fan is connected to a plurality of air outlet pipes for cooling the purification tube, and the plurality of air outlet pipes are arranged at intervals along the length direction of the purification tube.

[0018] In a possible implementation, a valve is installed in the air outlet pipe, and the valve is used to adjust the air output of the air outlet pipe.

[0019] In a possible implementation manner, a driving assembly is connected to the heating sleeve, and the driving assembly is used to make the heating sleeve slide along the heating sleeve.

[0020] In a possible implementation, the air outlet side of the purification pipe is connected to a recovery tank.

[0021] The utility model provides a multi-stage evaporator for alkali metal purification, which has the following beneficial effects: compared with the prior art, the utility model provides a multi-stage evaporator for alkali metal purification, in which the crucible is connected to the purification tube, a heating sleeve is provided on the outer sliding sleeve of the purification tube, a gas supply assembly is connected to the purification tube, and a plurality of collecting sleeves are provided on the sliding sleeve inside the purification tube, and the plurality of collecting sleeves are arranged at a certain distance along the length direction of the purification tube. The plurality of driving rods correspond to the collecting sleeves one by one, and one end of the driving rod is connected to the collecting sleeve.

[0022] In actual application, the alkali metal is heated in the crucible, the heating sleeve heats the purification tube at the corresponding position to raise the alkali metal to a specified temperature so as to vaporize it, the gas supply assembly allows the gas vaporized from the crucible and the gas heated and vaporized again by the heating sleeve to flow along the purification tube, and the driving rod drives the collection sleeve to slide along the purification tube to collect metal substances attached to the purification tube and the collection sleeve. Through the above arrangement, the purification and recovery of various alkali metals can be facilitated, the structure is relatively simple and the efficiency is high, and it is convenient for multiple uses. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A schematic diagram of the structure of a multi-stage evaporator for alkali metal purification provided in an embodiment of the utility model;

[0025] Figure 2 for Figure 1 A partial enlarged view of point A in the middle;

[0026] Figure 3 A schematic diagram of the connection between the purification tube and the crucible provided in an embodiment of the utility model.

[0027] In the figure: 1. purification tube; 2. air outlet pipe; 3. cooling fan; 4. recovery tank; 5. crucible; 6. gas supply assembly; 7. motor; 8. track; 9. heating sleeve; 10. temperature sensor; 11. connecting sleeve; 12. collecting sleeve; 13. driving rod. DETAILED DESCRIPTION

[0028] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0029] Please also read Figures 1 to 3Now, a multi-stage evaporator for purifying alkali metals provided by the utility model is described. A multi-stage evaporator for purifying alkali metals comprises: a purification tube 1, a crucible 5, a heating sleeve 9, a gas supply assembly 6, a plurality of collecting sleeves 12 and a plurality of driving rods 13. The crucible 5 is connected to the purification tube 1, and the crucible 5 is used to heat and vaporize the alkali metal. The heating sleeve 9 is slidably sleeved on the outside of the purification tube 1, and the heating sleeve 9 is used to heat the purification tube 1 at the corresponding position. The gas supply assembly 6 is connected to the purification tube 1, and the gas supply assembly 6 is used to make the gas vaporized from the crucible 5 and the gas heated and vaporized again by the heating sleeve 9 flow along the purification tube 1. A plurality of collecting sleeves 12 are slidably sleeved in the purification tube 1, and the plurality of collecting sleeves 12 are arranged at a certain distance along the length direction of the purification tube 1. Multiple driving rods 13 correspond to the collecting sleeves 12 one by one. One end of the driving rod 13 is connected to the collecting sleeve 12. The driving rod 13 drives the collecting sleeve 12 to slide along the purification tube 1 to collect metal substances attached to the purification tube 1 and the collecting sleeve 12.

[0030] The utility model provides a multi-stage evaporator for alkali metal purification. The beneficial effect is that compared with the prior art, the utility model provides a multi-stage evaporator for alkali metal purification. The crucible 5 is connected to the purification tube 1, the outer sliding sleeve of the purification tube 1 is provided with a heating sleeve 9, the gas supply assembly 6 is connected to the purification tube 1, and the sliding sleeve inside the purification tube 1 is provided with a plurality of collecting sleeves 12, and the plurality of collecting sleeves 12 are arranged at a certain distance along the length direction of the purification tube 1. The plurality of driving rods 13 correspond to the collecting sleeves 12 one by one, and one end of the driving rod 13 is connected to the collecting sleeve 12.

[0031] In actual application, the alkali metal is heated in the crucible 5, the heating sleeve 9 heats the purification tube 1 at the corresponding position to raise the alkali metal to a specified temperature so as to vaporize it, the gas supply assembly 6 allows the gas vaporized from the crucible 5 and the gas heated and vaporized again by the heating sleeve 9 to flow along the purification tube 1, and the driving rod 13 drives the collecting sleeve 12 to slide along the purification tube 1 to collect the metal substances attached to the purification tube 1 and the collecting sleeve 12. Through the above arrangement, the purification and recovery of various alkali metals can be facilitated, the structure is relatively simple and the efficiency is high, and it is convenient for multiple uses.

[0032] In some embodiments of a multi-stage evaporator for alkali metal purification provided in this application, please refer to Figure 1 and Figure 2, a hook is provided at the end of the driving rod 13, and the hook is clamped on the collecting sleeve 12 to drive the collecting sleeve 12 to move. First, the driving rod 13 can slide in the purification tube 1. In the absence of any other external force, the collecting sleeve 12 itself can be stabilized inside the purification tube 1. The metal is vaporized by the heating of the crucible 5, and the vaporized gas enters the purification tube 1 under the action of the gas supply component 6. Since the purification tube 1 is in different positions, that is, the distance from the crucible 5 is different, the corresponding temperature will also have a certain difference. According to the different vaporization temperatures of different metals, the purification tube 1 is kept at different temperatures through the heating sleeve 9, and finally the metal purification operation is realized.

[0033] During the application process, the gasified metal gas will adhere to the inner wall of the purification tube 1 after its temperature decreases. After purification, different types of metals will be present in different positions of the purification tube 1. At this time, the collection sleeve 12 is driven to move by the driving rod 13. Specifically, a hook is fixed at the end of the driving rod 13, and the hook is engaged with the collection sleeve 12, so the collection sleeve 12 can be determined to slide by the hook.

[0034] In some embodiments of a multi-stage evaporator for alkali metal purification provided in this application, please refer to Figure 1 and Figure 2 , a connecting sleeve 11 is fixed to the inner wall of the collecting sleeve 12, and the connecting sleeve 11 cooperates with the collecting sleeve 12 to collect metal substances, and the hook is connected to the connecting sleeve 11. In order to explain in more detail, and to ensure that the gasified metal gas can be liquefied and attached to the specified positions of the purification tube 1 and the collecting sleeve 12, that is, to avoid the problem of low gas attachment efficiency, a connecting sleeve 11 is fixed to the inner wall of the collecting sleeve 12. It is precisely because of the existence of the connecting sleeve 11 that, on the one hand, the hook can more easily drive the collecting sleeve 12 to move, and more importantly, due to the provision of the connecting sleeve 11, a space for retaining part of the gas will be formed between the connecting sleeve 11 and the collecting sleeve 12, and the gas will rotate in this space, which ultimately increases the degree of metal attachment to the scraper and the connecting sleeve 11.

[0035] In some embodiments of a multi-stage evaporator for alkali metal purification provided in this application, please refer to Figure 1 and Figure 2, the connecting sleeve 11 extends from the collecting sleeve 12 to the air inlet side of the purification tube 1, and a collecting trough for collecting metal substances is formed between the connecting sleeve 11 and the collecting sleeve 12. In order to improve the efficiency of metal attachment, the gasified metal gas can flow more in the space between the connecting sleeve 11 and the collecting sleeve 12. Therefore, the connecting sleeve 11 in the present application is not disc-shaped, but conical. In an embodiment, the connecting sleeve 11 extends from the collecting sleeve 12 to the air inlet side of the purification tube 1, and a vent is formed at the end of the connecting sleeve 11. It is the presence of the vent that allows the remaining gas to continue to flow along the purification tube 1. It is precisely because of the above-mentioned arrangement that a collecting trough is formed between the connecting sleeve 11 and the collecting sleeve 12. After the gas enters the collecting trough, it will rotate and flow in the collecting trough. During the rotation process, due to the continuous decrease in temperature, the metal substances will eventually adhere to the collecting trough.

[0036] In some embodiments of a multi-stage evaporator for alkali metal purification provided in this application, please refer to Figure 1 and Figure 2 , a temperature sensor 10 is installed on the connecting sleeve 11. In order to accurately measure the temperature at different positions of the purification tube 1, it is first necessary to ensure that the purification tube 1, the collecting sleeve 12 and the connecting sleeve 11 are all made of heat-conducting materials. Because of this, the temperatures of the purification tube 1, the collecting sleeve 12 and the connecting sleeve 11 can be similar. In actual application, the temperature sensor 10 is installed on the outer surface of the connecting sleeve 11, and the temperature of the gas at the connecting sleeve 11 is determined through the above setting.

[0037] In some embodiments of a multi-stage evaporator for alkali metal purification provided in this application, please refer to Figure 1 , a cooling fan 3 for cooling the purification tube 1 is provided on the outside of the purification tube 1. In the existing method, the temperature of the purification tube 1 needs to be reduced by dissipating the heat of the purification tube 1 itself, which requires the purification tube 1 to have a certain heat dissipation capacity and a certain length, but the above arrangement cannot make a specific metal adhere to a specific position of the purification tube 1, that is, it is impossible to accurately control the temperature of different positions of the purification tube 1. Since the temperature cannot be accurately controlled, it is impossible to ensure that the metal material adheres to the collection sleeve 12 and the connecting sleeve 11.

[0038] Based on the above reasons, a cooling fan 3 is provided on the outside of the purification tube 1, and the purification tube 1 is cooled by air blown by the cooling fan 3. Since the air volume is controllable, the purification tube 1 can be cooled to a specified temperature.

[0039] In some embodiments of a multi-stage evaporator for alkali metal purification provided in this application, please refer to Figure 1, the cooling fan 3 is connected with a plurality of air outlet pipes 2 for cooling the purification tube 1, and the plurality of air outlet pipes 2 are arranged at intervals along the length direction of the purification tube 1. In this application, the heating sleeve 9 is required to heat the metal material attached to the purification tube 1, the collecting sleeve 12 and the connecting sleeve 11, and the metal gas will not liquefy until after a specific temperature. In order to accurately control the temperature of the purification tube 1, the collecting sleeve 12 and the connecting sleeve 11, in this application, a plurality of air outlet pipes 2 are connected with the cooling fan 3, and different air outlet pipes 2 are at different positions. By making different air outlet pipes 2 cool the purification tubes 1 at different positions, the ultimate goal is to make the temperatures at different positions of the air outlet pipe 2 different, thereby ensuring that the specific metal gas can be liquefied at a specific position of the purification tube 1.

[0040] In some embodiments of a multi-stage evaporator for alkali metal purification provided in the present application, a valve is installed in the air outlet pipe 2, and the valve is used to adjust the air volume of the air outlet pipe 2. In order to ensure that gases of different components can be liquefied at designated locations, it is necessary to dynamically and in real time adjust the air volume of the air outlet pipes 2 at different locations. If the temperature feedback from the temperature sensor 10 is high, the air volume of the air outlet pipe 2 at the corresponding location needs to be increased. If the temperature feedback from the temperature sensor 10 is low, the air volume of the air outlet pipe 2 at the corresponding location needs to be reduced or even closed.

[0041] Based on the above reasons, a valve is installed on the air outlet pipe 2. The valve may be a butterfly valve, and the valve may be a solenoid valve. It is the above arrangement that can dynamically adjust and control the air outlet pipe 2.

[0042] In some embodiments of a multi-stage evaporator for alkali metal purification provided in this application, please refer to Figure 3 The heating jacket 9 is connected to a driving assembly, and the driving assembly is used to make the heating jacket 9 slide along the purification tube 1. For more detailed description, the driving assembly includes a track 8 and a motor 7 sliding along the track 8, and the heating jacket 9 is installed on the motor 7. In actual application, the heating jacket 9 is driven by the motor 7 to move along the track 8. And the heating jacket 9 has different operating parameters, so the heating effect also has certain differences.

[0043] In some embodiments of a multi-stage evaporator for alkali metal purification provided in this application, please refer to Figure 1 The air outlet side of the purification pipe 1 is connected to a recovery tank 4. By setting the recovery tank 4, waste of resources and harm to the environment are avoided, and the material in the recovery tank 4 can continue to be purified after cooling.

[0044] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-stage evaporator for alkali metal purification, characterized in that: include: Purification tube; A crucible connected to the purification tube, wherein the crucible is used to heat and vaporize the alkali metal; A heating sleeve, a sliding sleeve is arranged on the outside of the purification tube, and the heating sleeve is used to heat the purification tube at a corresponding position; A gas supply assembly connected to the purification tube, the gas supply assembly is used to make the gas vaporized from the crucible and the gas heated by the heating jacket and vaporized again flow along the purification tube; A plurality of collecting sleeves, the sliding sleeves are arranged in the purification tube, and the plurality of collecting sleeves are arranged at a certain distance along the length direction of the purification tube; A plurality of driving rods correspond to the collecting sleeves one by one, one end of each driving rod is connected to the collecting sleeve, and the driving rod drives the collecting sleeve to slide along the purification tube to collect metal substances attached to the purification tube and the collecting sleeve.

2. A multi-stage evaporator for alkali metal purification as claimed in claim 1, characterized in that: A hook is provided at the end of the driving rod, and the hook is clamped on the collecting sleeve to drive the collecting sleeve to move.

3. A multi-stage evaporator for alkali metal purification as claimed in claim 2, characterized in that: A connecting sleeve is fixed to the inner wall of the collecting sleeve, and the connecting sleeve cooperates with the collecting sleeve to collect metal substances, and the hook is connected to the connecting sleeve.

4. A multi-stage evaporator for alkali metal purification as claimed in claim 3, characterized in that: The connecting sleeve extends from the collecting sleeve to the air inlet side of the purification tube, and a collecting trough for collecting metal substances is formed between the connecting sleeve and the collecting sleeve.

5. A multi-stage evaporator for alkali metal purification as claimed in claim 4, characterized in that: A temperature sensor is installed on the connecting sleeve.

6. A multi-stage evaporator for alkali metal purification as claimed in claim 1, characterized in that: A cooling fan for cooling the purification tube is arranged on the outer side of the purification tube.

7. A multi-stage evaporator for alkali metal purification as claimed in claim 6, characterized in that: The cooling fan is connected to a plurality of air outlet pipes for cooling the purification tube, and the plurality of air outlet pipes are arranged at intervals along the length direction of the purification tube.

8. A multi-stage evaporator for alkali metal purification as claimed in claim 7, characterized in that: A valve is installed in the air outlet pipe, and the valve is used to adjust the air outlet volume of the air outlet pipe.

9. A multi-stage evaporator for alkali metal purification as claimed in claim 1, characterized in that: The heating sleeve is connected with a driving assembly, and the driving assembly is used to make the heating sleeve slide along the heating sleeve.

10. A multi-stage evaporator for alkali metal purification as claimed in claim 1, characterized in that: The air outlet side of the purification pipe is connected to a recovery tank.

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