High-purity titanium cooling position device and high-purity titanium collecting tower treatment method

Abstract

The invention discloses a high-purity titanium cooling position device and a high-purity titanium collecting tower treatment method, and belongs to the technical field of high-purity titanium electrolysis purification equipment. Comprising a collecting tower supporting table and a vacuum unit which are arranged from top to bottom, the collecting tower supporting table is provided with an inert gas supplementing channel and a vacuum channel, and the vacuum unit is communicated with the interior of a collecting tower through the vacuum channel and used for performing vacuumizing and air tightness detection operation on the collecting tower. By means of the device, inert gas can be continuously supplemented in the high-purity titanium material cooling process, meanwhile, rapid vacuumizing and airtight evaluation are conducted on the empty collecting tower, and a closed controlled environment is effectively formed. The device solves the problems that a traditional collecting structure cannot be independently sealed, the period of a non-electrolysis process is long, and energy consumption is high, the utilization rate of an electrolytic furnace is increased to 92% or above, the operation efficiency of equipment is remarkably improved, and the device is suitable for industrial and continuous production requirements of high-purity titanium materials.

Description

Technical Field

[0001] This invention relates to the field of electrochemical purification metallurgy technology, and in particular to a high-purity titanium cooling station device and a high-purity titanium collection tower treatment method. Background Technology

[0002] With increasingly stringent performance requirements for high-purity titanium materials, their applications in aerospace, electronics, and precision manufacturing are becoming increasingly widespread. To meet the stringent purity control demands of titanium, molten salt electrolytic purification has become a crucial step in the production process. In this type of electrolytic purification system, the high-purity titanium material produced during electrolysis needs to be cooled under a controlled atmosphere to prevent reaction with reactive gases in the air at high temperatures, which could lead to a decrease in material purity.

[0003] In existing electrolysis equipment structures, a horizontal or translational mechanism is typically used to move the upper collection structure above the electrolytic cell for material collection and cooling. Because this type of structure lacks a controllable sealing unit above the collection tower, it cannot form an independent, sealed cavity, and the entire tower still has gas exchange channels with the external environment. Therefore, after the purified high-temperature material is raised into the tower, effective isolation measures cannot be implemented immediately; it can only be cooled in situ, and a long waiting period is required for the titanium crystals to completely cool before material transfer can proceed.

[0004] Furthermore, after transferring high-purity titanium, the structure requires reassembly of the electrodes and a lengthy vacuuming and airtightness restoration process, resulting in a significant accumulation of non-electrolysis time. To maintain the molten state of the molten salt electrolytic cell, the system needs to operate under continuous heating, severely impacting the overall utilization rate of the equipment and causing energy waste.

[0005] In summary, the existing structure has several problems such as poor airtightness, long material cooling cycle, low electrode replacement efficiency and high energy consumption. There is an urgent need for a high-purity titanium collection and cooling device that can form an independent sealed space and support rapid vacuuming and inert gas replenishment, so as to optimize the purification process, improve equipment utilization efficiency and reduce production energy consumption. Summary of the Invention

[0006] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a high-purity titanium cooling station device and a high-purity titanium collection tower processing method, which are used to realize the vacuuming and inert gas replenishment operation of the collection tower, and ensure the airtightness and atmosphere stability during the high-purity titanium cooling process.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a high-purity titanium cooling station device, comprising a collection tower platform and a vacuum unit arranged from top to bottom;

[0008] The collection tower platform is equipped with an inert gas replenishment channel and a vacuum channel;

[0009] The vacuum unit is connected to the inside of the collection tower through a vacuum channel and is used to perform vacuuming and airtightness testing on the collection tower.

[0010] Furthermore, the collection tower support includes a pressure-bearing platform, several positioning blocks evenly distributed around the edge of the pressure-bearing platform, a vacuum port located at the center of the pressure-bearing platform, and a gas supply pipe introduced laterally from the bottom of the pressure-bearing platform; the outer side of the positioning block is provided with a radially movable latch, which is locked to the lower edge of the collection tower.

[0011] Furthermore, the positioning block is a ring-shaped positioning structure, and its inner circumference is provided with an arc-shaped guide surface with a radius of curvature matching the outer diameter of the collection tower. The gap between the arc-shaped guide surface and the outer wall of the collection tower is ≤2mm.

[0012] Furthermore, a protective cover is bolted to the top of the vacuum tube opening. The diameter of the protective cover is larger than the diameter of the vacuum tube opening. The protective cover is used to protect the area above the vacuum tube opening from falling.

[0013] Furthermore, the vacuum unit includes a slide valve pump and a Roots pump connected in parallel, a main pipeline connecting the pump unit, and several branch pipelines connecting the main pipeline; each branch pipeline is connected to the vacuum channel through a shock-absorbing throat, and a roughing valve is provided on the branch pipeline.

[0014] Furthermore, the damping throat is a metal bellows structure with a fluororubber layer lining its inner wall, and the axial compensation is ≥10mm.

[0015] Furthermore, it also includes a vacuum gauge installed on the main pipeline, which is communicatively connected to the control system to monitor the air pressure value in real time and trigger the following operations:

[0016] When the air pressure drops to 400-600Pa, the Roots pump will start automatically;

[0017] After the gas pressure drops to the ultimate vacuum, the slide valve pump and the Roots pump continue to evacuate for more than 4 hours. Then, the pump set and valves are shut off, and the pressure rise rate of the collection tower is tested within 10 minutes. When the pressure rise rate is greater than 15 Pa / min, it is marked as abnormal.

[0018] Furthermore, the latch has a built-in pressure sensor that generates a positioning signal when the latch is fully engaged with the lower edge of the collection tower. This signal is used to control the opening of the protective cover and the activation of the gas supply pipe.

[0019] Furthermore, the inert gas replenishment channel is equipped with a mass flow controller to maintain the gas pressure in the collection tower within the range of +50Pa to +200Pa.

[0020] A method for processing high-purity titanium in a collection tower, employing the aforementioned high-purity titanium cooling station device, includes:

[0021] Step S1: Hoist the fully loaded collection tower to the cooling position, and replenish inert gas through the mass flow controller to maintain a positive pressure of +50Pa to +200Pa inside the tower; after the cooling time is greater than 15 hours, discharge the gas inside the tower through the pressure relief valve on the collection tower, hoist the collection tower to the ground discharge position, remove the electrode covered with titanium crystals, connect the empty electrode to the electrode hanger inside the tower, and lift it into the tower through the lifting mechanism inside the tower, and then move the collection tower back to the cooling position;

[0022] Step S2: Evacuate the empty collection tower to ≤10Pa, continue evacuating for more than 4 hours, then close the coarse evacuation valve. When the pressure rise rate is ≤15Pa / min, the airtightness is deemed qualified.

[0023] Step S3: Inert gas is introduced into the airtight collection tower to a positive pressure of 200 Pa, and then the tower is hoisted to the electrolysis station.

[0024] The beneficial effects of this invention are:

[0025] This invention, by setting up an inert gas replenishment channel and a vacuum channel, enables real-time inert gas replenishment to a collection tower already filled with high-purity titanium material. This effectively isolates active components in the air, preventing oxidation or nitriding reactions of the high-temperature titanium crystals, thereby ensuring the purity and stability of the final product. Simultaneously, this device can perform a series of closed-environment control operations on the empty collection tower, including efficient vacuuming, airtightness testing, and inert gas replenishment, ensuring that the collection tower has qualified internal environmental conditions before reuse, greatly improving the efficiency and safety of non-electrolysis processes.

[0026] The technical solution of this invention significantly shortens the transfer preparation time of the collection tower, effectively reduces the non-working cycle of the electrolysis system, and increases the actual utilization rate of the electrolyzer to over 92%, which is more than 15% higher than the traditional translational structure, significantly enhancing the continuity of the overall process and the operating efficiency of the equipment.

[0027] Furthermore, this invention provides a hoisting-type automatic conversion solution for high-purity titanium electrolysis production lines, breaking through the limitations of traditional structures in terms of space utilization and sealing efficiency. It has become a key link in improving the unit capacity of electrolysis furnaces, laying the equipment foundation and technical support for the automation, large-scale production, and industrialization of the high-purity titanium industry. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the high-purity titanium cooling device in this invention;

[0029] Figure 2 This is a schematic diagram of the side structure of the collection tower platform in this invention;

[0030] Figure 3This is an isometric view of the collection tower support platform in this invention;

[0031] Figure 4 This is a structural location diagram of the roughing valve in this invention;

[0032] Figure 5 This is a flowchart of the steps in the high-purity titanium collection tower treatment method of the present invention.

[0033] Reference numerals in the attached diagram: 1. Collection tower support; 11. Pressure bearing platform; 12. Positioning block; 13. Vacuum port; 14. Gas supply pipe; 15. Lock; 16. Protective cover; 2. Vacuum unit; 21. Slide valve pump; 22. Roots pump; 23. Main pipeline; 24. Branch pipeline; 25. Vibration damping throat; 26. Coarse extraction valve; 3. Collection tower. Detailed Implementation

[0034] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Identical components are denoted by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0035] Example 1, referring to Figures 1 to 4 This is the first embodiment of the present invention, which provides a high-purity titanium cooling station device suitable for non-electrolysis processes in the molten salt electrolysis of high-purity titanium. The device structure, from top to bottom, includes a collection tower support platform 1 and a vacuum unit 2. It has multiple functions such as vacuuming the collection tower 3, airtightness testing, and inert gas replenishment, and supports automated linkage control, significantly improving the efficiency of the electrolysis equipment.

[0036] I. Structural Composition

[0037] 1. Collection tower platform structure

[0038] The collection tower platform 1 is set on the steel structure platform of the electrolytic furnace, as shown in the reference. Figures 2 to 3 ,include:

[0039] Pressure-bearing platform 11: The main load-bearing platform supporting the entire collection tower 3, its lower part is fixed to the platform structure by four supports arranged at 90° to each other.

[0040] Positioning block 12: Arranged in a ring on the edge of the pressure platform 11, it is a ring positioning structure with an arc-shaped guide surface on its inner circumference. The radius of curvature of the guide surface matches the outer diameter of the collection tower 3, and the gap between the guide surface and the outer wall of the collection tower 3 is ≤2mm, ensuring high-precision guidance and positioning during installation.

[0041] Locking buckle 15 structure: The outer side of the positioning block 12 is provided with a radially movable locking buckle 15 structure, which corresponds to the annular buckle on the lower edge of the collection tower 3 for quick locking, thereby enhancing the stability and sealing performance after alignment.

[0042] Vacuum port 13 and protective cover: A vacuum port 13 is provided in the center of the pressure platform 11 for connecting to the vacuum unit 2 below. A protective cover 16 is bolted above the vacuum port 13. The diameter of the protective cover 16 is larger than the diameter of the vacuum port 13. The protective cover 16 is used to protect the area above the vacuum port 13 from falling and prevent titanium crystals or salt ash from falling into the vacuum port 13 and causing damage to the pump after the flap valve of the collection tower is opened.

[0043] Gas supply pipe 14: introduced laterally from the bottom of the pressure platform 11, used to inject high-purity inert gas (preferably argon) into the tower to maintain the cooling of pure titanium material in a closed, inactive environment.

[0044] 2. Vacuum Unit 2 Structure

[0045] The vacuum system uses a slide valve pump 21 and a Roots pump 22 connected in parallel to form a pump group, as shown in the reference. Figure 1 and Figure 4 The configuration is as follows:

[0046] The slide valve pump 21 is used for rough pumping, with a pumping speed of 150L / s, a power of 15kW, and a vacuum level that can be reduced to below 400Pa.

[0047] The Roots pump 22 is used for precision pumping, with a pumping speed of 1200 L / s and an ultimate pressure of up to 5 × 10⁻² P. a Power 11kW;

[0048] The vacuum pipeline includes the main pipeline 23 and the branch pipeline 24. The vacuum pipeline adopts a one-to-three / one-to-four structure, that is, one pump set can serve 3 or 4 cooling positions at the same time. The pipeline is welded from DN150 steel pipe.

[0049] Each branch pipe 24 is connected to the vacuum channel of the support platform through a vibration damping throat 25 to reduce operating vibration;

[0050] Each cooling station is equipped with an independent coarse suction valve 26 to control the air extraction flow.

[0051] The pipeline is equipped with a vacuum gauge to monitor the air pressure in real time and communicate with the control system. When the preset air pressure is reached, the corresponding vacuuming or shut-off operation is triggered.

[0052] II. Working Principle of Example 1

[0053] When a vacuum needs to be applied to a cooling station, the operator selects the corresponding number in the electrical control cabinet and opens the coarse evacuation valve 26, the pre-valve, and the slide valve pump 21 for that station. After the slide valve pump 21 starts, the internal pressure of the collection tower 3 is reduced to 400–600 Pa. When the pressure is reduced to the ultimate vacuum, the slide valve pump 21 and the Roots pump 22 continue to evacuate for more than 4 hours. Then, the pump set and valves are closed, and the pressure rise rate of the collection tower 3 is tested within 10 minutes. If the pressure rise rate is greater than 15 Pa / min, it is marked as abnormal.

[0054] The system then automatically executes the airtightness test procedure to ensure that the sealing condition is qualified. High-purity argon gas is introduced through the gas supply pipe 14 to establish a closed inert environment for the cooling area, meeting the environmental requirements for the cooling process and subsequent electrolysis preparation.

[0055] During this process, the annular positioning structure ensures precise alignment of the device during positioning by using a high-precision fit (≤2mm gap) between the arc-shaped guide surface and the outer wall of the collection tower 3, preventing vacuum leakage due to displacement or eccentricity. Simultaneously, the latching and locking mechanism 15 ensures stable locking during high-vacuum operation, preventing structural loosening and displacement.

[0056] III. Technical Effects of Example 1

[0057] Compared with the existing translational electrolysis equipment structure, this embodiment has the following significant technical advantages:

[0058] 1. High positioning accuracy and excellent sealing performance: The ring-shaped arc guide positioning structure with curvature matching is adopted, combined with ≤2mm gap control, to achieve high-precision and fast docking and primary sealing, reducing the risk of vacuum leakage;

[0059] 2. High vacuum efficiency and intelligent control: The slide valve pump 21 and the Roots pump 22 work together, combined with the feedback from the vacuum gauge, to automatically switch the vacuuming stage and improve the efficiency of establishing an airtight environment.

[0060] 3. Significant energy saving and efficiency improvement: Due to the significant reduction in vacuum preparation and atmosphere building time, the utilization rate of the electrolysis furnace is increased to over 92%, which is no less than 15% higher than the traditional method;

[0061] 4. High structural integration, convenient and safe operation: Modular design, centralized control and automatic feedback realize integrated operation of cooling position air extraction, detection and air replenishment, reducing human error and ensuring equipment safety;

[0062] 5. Promote the industrialization of the process: As a key component, this device improves the operating efficiency and consistency of high-purity titanium purification equipment, and strongly supports the industrialization and automation of high-purity titanium production lines.

[0063] Example 2 is the second embodiment of the present invention. Unlike the previous embodiment, this embodiment further optimizes the flexible connection performance of the vacuum channel and the level of intelligent operation linkage based on Example 1, so as to improve the system stability, control accuracy and operation convenience.

[0064] I. Structural Composition

[0065] Based on Example 1, this embodiment mainly optimizes the following two technical structures:

[0066] 1. Metal bellows type vibration damping throat 25 structure

[0067] The branch pipe 24 between the cooling platform and the vacuum unit 2 is connected by a vibration damper 25. The vibration damper 25 adopts a metal bellows structure with a fluororubber lining on its inner wall, which has good high temperature resistance and corrosion resistance. The axial compensation of the bellows structure is ≥10mm, which can effectively buffer the pipe vibration, thermal expansion and contraction stress and installation errors during the vacuuming process, prevent fatigue of welded parts or vacuum leakage, and improve the long-term stability of the equipment.

[0068] 2. Locking 15-linkage intelligent control structure

[0069] Each locking mechanism 15 on the cooling platform integrates a pressure sensor to monitor the contact status between the locking mechanism 15 and the latches along the lower edge of the collection tower 3 in real time. When the pressure sensor detects that all locking mechanisms 15 are fully engaged, the system automatically generates a "positioning signal," which triggers the following actions through the control system:

[0070] The protective cover 16 is activated in conjunction with the action to ensure that the vacuum channel is unobstructed and to prevent the titanium crystal from blocking it;

[0071] Activate gas supply pipe 14 to put the inert gas filling module into standby mode, ready to fill high-purity argon gas according to the procedure;

[0072] To prevent accidental triggering of the vacuuming operation, the vacuum system can only be unlocked and started after the lock is properly engaged, thus increasing operational safety.

[0073] II. Working Principle of Example 2

[0074] After the collection tower 3 is loaded onto the cooling platform manually or automatically, it undergoes preliminary mechanical alignment, with the guiding and positioning relying on precise matching of the annular arc surface (see Example 1). Subsequently, the operator or the system automatically drives the locking buckle 15 to perform a clamping action, and the locking buckle 15 engages with the annular buckle on the lower edge of the collection tower 3.

[0075] When latch 15 reaches the set pressure threshold and remains stable, the built-in pressure sensor sends a "position signal". After recognizing the signal, the control system automatically performs the following operations:

[0076] Open the protective cover 16 on the vacuum tube port 13;

[0077] Unlock the electronic control permissions of the vacuum system and the gas supply system;

[0078] The operation interface will prompt that vacuuming can be started, to avoid damage to the equipment or failure to seal due to accidental operation or vacuuming when not locked.

[0079] Meanwhile, once the vacuuming process begins, the instantaneous negative pressure generated by the pumping or the pipeline vibration caused by the pump unit's operation is flexibly absorbed by the metal bellows damping throat 25. With an axial compensation capacity of ≥10mm, this structure can adapt to minor structural shifts caused by thermal expansion, negative pressure suction, etc., maintaining the sealing continuity of the vacuum system and reducing the risk of system resonance and structural fatigue.

[0080] III. Technical Effects of Example 2

[0081] By combining the above structure and control logic, this embodiment has the following outstanding technical effects:

[0082] 1. Dynamic flexible connection improves system reliability: The combination design of metal bellows and fluororubber lining not only has good strength and corrosion resistance, but also absorbs axial impact and stress fluctuations during operation, extending the service life of the vacuum pipeline system and reducing the risk of leakage.

[0083] 2. Intelligent linkage ensures the correctness and safety of the operation process: The built-in pressure sensor realizes the real-time perception of the "lock in place" status, ensuring that the vacuum system, protection device and gas system are activated in sequence according to the logical process, avoiding damage or accidents caused by incorrect operation sequence.

[0084] 3. Enhanced ease of use and efficiency through automated control: Operators do not need to manually determine the locking status. The system automatically identifies the lock status and activates subsequent processes, reducing human error, increasing automation, and improving equipment operating efficiency.

[0085] 4. Improved overall reliability and adaptability: In complex operating scenarios involving high temperature, high pressure, and vacuum, the structural design of this embodiment has stronger mechanical robustness and environmental adaptability, ensuring long-term stable operation.

[0086] Example 3 is the third embodiment of the present invention. Unlike the previous embodiment, this embodiment discloses a high-purity titanium cooling station device with mass flow control function and its matching collection tower 3 processing method. It aims to achieve closed-loop control of the entire process of high-purity titanium material collection, atmosphere protection, airtightness verification and station transfer through precise gas flow and pressure control, thereby improving the efficiency of the electrolysis system and the stability of product purity.

[0087] I. Optimization of Device Structure

[0088] Based on the structures of Examples 1-2, the inert gas replenishment channel is further functionally optimized. Specifically:

[0089] A mass flow controller (MFC) is integrated into the air supply channel;

[0090] The mass flow controller is used to accurately measure and automatically control the inert gas (preferably high-purity argon) that is introduced into the collection tower 3;

[0091] The target pressure range for gas injection is set to +50Pa to +200Pa positive pressure. The system maintains a stable, slightly positive pressure environment inside the tower through feedback closed-loop control. The controller supports communication with the main control system, allowing different gas injection rates or target pressures to be set at different cooling stages.

[0092] The introduction of this structure aims to solve the problem of "risk of titanium crystal oxidation caused by manual gas replenishment, overpressure, or insufficient gas replenishment" in traditional devices.

[0093] II. High-purity titanium collection tower treatment method

[0094] The present invention also provides a method for processing high-purity titanium collection towers based on the above-mentioned device, referring to... Figure 5 The operation steps are as follows:

[0095] Step S1: Positive pressure inflation

[0096] The collection tower 3, fully loaded with high-purity titanium crystals, is vertically positioned onto the cooling device by a hoisting device. After precise docking with the guide structure via the intelligent locking buckle 15, the system automatically activates the mass flow controller to begin injecting high-purity argon gas into the tower. Based on the tower volume and leakage model, the controller adjusts the flow rate in real time to maintain the tower pressure stably between +50Pa and +200Pa in a slightly positive pressure state, thereby preventing air backflow and high-temperature oxidation reaction of the titanium crystals. After the cooling time exceeds 15 hours, the gas inside the tower is discharged through the pressure relief valve on the collection tower 3. The collection tower 3 is then hoisted to the ground discharge position, and the electrode filled with titanium crystals is removed. The empty electrode is connected to the electrode hanger inside the tower and lifted into the tower by the lifting mechanism inside the tower. The collection tower 3 is then moved back to the cooling position.

[0097] Step S2: Vacuum extraction and airtightness test

[0098] For the empty collection tower 3, after the locking is completed, the slide valve pump 21 is started through the vacuum port 13 for rough evacuation. After the gas pressure drops below 400 Pa, the Roots pump 22 is automatically started to complete the fine evacuation, with a target vacuum degree of ≤10 Pa. After the set vacuum is reached, the rough evacuation valve 26 is closed, and the system enters the pressure rise rate detection stage.

[0099] When the gas pressure drops to the ultimate vacuum, slide valve pump 21 and Roots pump 22 continue to pump vacuum for more than 4 hours. After the continuous pumping time exceeds 4 hours, the pump group and valves are shut off. The pressure rise rate of collection tower 3 is tested within 10 minutes. When the pressure rise rate is greater than 15 Pa / min, it is marked as abnormal and an alarm is triggered, prompting maintenance to check.

[0100] Step S3: Normal pressure restoration and transfer

[0101] For the airtight collection tower 3, gas is slowly replenished again via the gas replenishment pipe 14 under the control of the mass flow controller until the pressure inside the tower reaches a positive pressure of 200 Pa. After the gas replenishment is completed, the system prompts that lifting is permitted, and the collection tower 3 is transferred by the hoisting device to the electrolysis station to await the next round of pure titanium purification operation.

[0102] III. Working Principle of Example 3

[0103] The mass flow controller in this embodiment adopts an electronic closed-loop regulation structure, integrating a differential pressure sensor, valve control module and control chip, and can perform feedback regulation according to the target pressure setting;

[0104] Together with the vacuum gauge and the latch 15 sensor, it forms a multi-signal joint control logic to ensure a reasonable operation sequence and a safe interlocking mechanism.

[0105] Each cooling cycle is performed according to the above steps to ensure the repeatability and standardization of the process.

[0106] IV. Technical Effects of Example 3

[0107] The technical solution of this embodiment achieves the following expected technical effects:

[0108] 1. More precise control of high-purity atmosphere: The inert gas supply and pressure inside the tower are precisely controlled in real time by a mass flow controller to avoid overpressure or underpressure and ensure the chemical stability of titanium crystal at high temperature.

[0109] 2. More reliable airtightness testing: By using a pressure rise rate ≤0.5Pa / min as the qualified threshold, the sealing safety of the collection tower 3 is ensured during subsequent vacuuming or gas filling processes;

[0110] 3. Standardized and automated operation process: From loading, locking, air replenishment, vacuuming, air tightness detection and air replenishment again, the entire process is automatically controlled in a closed loop, reducing human error.

[0111] 4. Strong system adaptability: It is suitable for collection towers of different sizes and capacities, and can connect multiple cooling stations in parallel to achieve modular integrated production;

[0112] 5. Significantly improved production line efficiency: The preparation cycle of collection tower 3 is shortened, and with high-frequency scheduling and precise flow control, seamless connection between collection and electrolysis operations is achieved, providing an equipment foundation for the continuous and large-scale production of high-purity titanium.

[0113] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A high-purity titanium cooling device, characterized in that: It includes a collection tower platform (1) and a vacuum unit (2) arranged from top to bottom; The collection tower platform (1) is equipped with an inert gas replenishment channel and a vacuum channel; The vacuum unit (2) is connected to the inside of the collection tower (3) through a vacuum channel, and is used to perform vacuuming and airtightness testing on the collection tower (3).

2. The high-purity titanium cooling device according to claim 1, characterized in that: The collection tower support (1) includes a pressure-bearing platform (11), a number of positioning blocks (12) evenly distributed around the edge of the pressure-bearing platform (11), a vacuum port (13) located at the center of the pressure-bearing platform (11), and a gas supply pipe (14) introduced laterally from the bottom of the pressure-bearing platform (11); the positioning blocks (12) are provided with radially movable latches (15), which are locked to the lower edge of the collection tower (3).

3. The high-purity titanium cooling device according to claim 2, characterized in that: The positioning block (12) is a ring positioning structure, and its inner circumference is provided with an arc-shaped guide surface with a radius of curvature matching the outer diameter of the collection tower (3). The gap between the arc-shaped guide surface and the outer wall of the collection tower (3) is ≤2mm.

4. The high-purity titanium cooling device according to claim 2, characterized in that: A protective cover (16) is bolted above the vacuum tube opening (13). The diameter of the protective cover (16) is larger than the diameter of the vacuum tube opening (13). The protective cover (16) is used to protect the area above the vacuum tube opening (13) from falling.

5. The high-purity titanium cooling device according to claim 1, characterized in that: The vacuum unit (2) includes a slide valve pump (21) and a Roots pump (22) connected in parallel, a main pipeline (23) connecting the pump unit, and several branch pipelines (24) connecting the main pipeline (23); each branch pipeline (24) is connected to the vacuum channel through a shock absorber (25), and a roughing valve (26) is provided on the branch pipeline (24).

6. The high-purity titanium cooling device according to claim 5, characterized in that: The shock absorber (25) is a metal bellows structure with a fluororubber layer on its inner wall and an axial compensation of ≥10mm.

7. The high-purity titanium cooling device according to claim 5, characterized in that: It also includes a vacuum gauge installed on the main pipeline (23), which is communicatively connected to the control system to monitor the air pressure value in real time and trigger the following operations: When the air pressure drops to 400-600Pa, the Roots pump (22) is automatically started; When the gas pressure drops to the ultimate vacuum, the slide valve pump (21) and the Roots pump (22) continue to pump vacuum for more than 4 hours, then the pump group and valves are closed, and the pressure rise rate of the collection tower (3) is tested within 10 minutes. When the pressure rise rate is greater than 15 Pa / min, it is marked as abnormal.

8. The high-purity titanium cooling device according to claim 4, characterized in that: The latch (15) has a built-in pressure sensor. When the latch (15) is fully engaged with the lower edge of the collection tower (3), it generates a positioning signal. This signal controls the opening of the protective cover (16) and the activation of the gas supply pipe (14).

9. The high-purity titanium cooling device according to claim 1, characterized in that: The inert gas replenishment channel is equipped with a mass flow controller to maintain the gas pressure in the collection tower (3) within the range of +50Pa to +200Pa.

10. A method for processing high-purity titanium using a collection tower, characterized in that, The high-purity titanium cooling device according to any one of claims 1-9 comprises: Step S1: Hoist the fully loaded collection tower (3) to the cooling position, and replenish inert gas through the mass flow controller to maintain a positive pressure of +50Pa to +200Pa inside the tower; after the cooling time is greater than 15 hours, discharge the gas inside the tower through the pressure relief valve on the collection tower (3), hoist the collection tower (3) to the ground discharge position, remove the electrode with full titanium crystal growth, connect the empty electrode to the electrode hanger inside the tower, and lift it into the tower through the lifting mechanism inside the tower, and move the collection tower (3) back to the cooling position; Step S2: Evacuate the empty collection tower (3) to ≤10Pa, continue evacuating for more than 4 hours, then close the coarse evacuation valve (26), and determine the airtightness when the pressure rise rate is ≤15Pa / min. Step S3: Inert gas is introduced into the airtight collection tower (3) to a positive pressure of 200 Pa, and then the tower is hoisted to the electrolysis station.

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