Molten aluminum degassing device
By using a vertical partition plate and a hollow rotor in the aluminum liquid degassing device to disperse nitrogen bubbles, and using a graphite block liquid pressure mechanism, the smooth discharge of aluminum liquid is achieved and a thin oxide layer is formed, which solves the large-area contact of aluminum liquid during discharge. The oxidation problems caused by air ensure the quality of liquid aluminum.
Patent Information
- Application Number
- CN202420167337.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-23
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-01-23
AI Technical Summary
When liquid aluminum is quickly discharged from the bottom of the degassing tank, it is easy to destroy the thin oxide layer, causing liquid aluminum to come into contact with air in large areas and causing substantial oxidation.
A liquid aluminum degassing device was designed, using vertical partition plates and hollow rotors to disperse nitrogen bubbles, forming tiny bubbles to float up in the liquid aluminum, combining graphite blocks and liquid pressure mechanisms, slowly raising the liquid aluminum liquid level to the liquid outlet channel It is discharged gently to form a thin oxide layer to separate the liquid aluminum from the air.
It effectively avoids large-scale contact with air during the discharge process, reduces oxidation and ensures the quality of the aluminum liquid.
Smart Images
Figure CN222274643U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of aluminum liquid degassing, in particular to an aluminum liquid degassing device. Background Art
[0002] The aluminum liquid degassing device includes a degassing box, which is provided with a degassing tank and a liquid inlet channel leading to the degassing tank. The degassing box is also provided with a vertical hollow rotor and a drive motor, which is connected to the hollow rotor by the drive motor. The upper end of the hollow rotor is the air inlet end, and the lower end is the air outlet end, which extends into the degassing tank. The operator first allows the aluminum liquid to flow into the degassing tank from the liquid inlet channel, and then introduces nitrogen into the air inlet end of the hollow rotor. The nitrogen moves down along the hollow rotor to the air outlet end of the hollow rotor, and then is discharged from the air outlet end of the hollow rotor into the aluminum liquid in the degassing tank. The drive motor drives the hollow rotor to rotate, thereby breaking up the larger nitrogen bubbles to form a large number of tiny nitrogen bubbles. The nitrogen bubbles take away the hydrogen in the aluminum liquid during the floating process. Therefore, the degassing tank needs to maintain a certain water depth to extend the floating time of the bubbles to ensure the degassing effect. The mouth of the degassing tank faces upward, and the aluminum liquid degassing device is provided with a lid covering the mouth of the degassing tank. After the nitrogen bubbles float up in the degassing tank, they will fill the top of the degassing tank, and the hydrogen and excess nitrogen will be discharged from the liquid inlet channel, so that the outside air will not enter the top of the degassing tank from the liquid inlet channel, avoiding the large-area contact of the aluminum liquid in the degassing tank with the air when the rotor rotates.
[0003] There is a liquid outlet channel on the aluminum liquid degassing box, which leads to the degassing tank and is higher than the bottom wall of the degassing tank. As the aluminum liquid continuously flows into the degassing tank from the liquid inlet channel, the liquid level of the degassing tank will slowly rise. When the liquid level of the degassing tank rises to a level higher than the liquid outlet channel, the aluminum liquid in the degassing tank will flow out smoothly from the liquid outlet channel, and the aluminum liquid after flowing out can be used to cast into ingots. When the aluminum liquid in the degassing tank flows out smoothly from the liquid outlet channel, a thin oxide layer is formed on the top of the aluminum liquid. The thin oxide layer moves smoothly with the aluminum liquid in the liquid outlet channel, thereby separating the aluminum liquid below the thin oxide layer from the air, and preventing the aluminum liquid from contacting the air over a large area. After the degassing is completed, no more aluminum liquid flows into the degassing tank from the liquid inlet channel, and the aluminum liquid in the degassing tank no longer flows out from the liquid outlet channel. There is generally a drainage channel at the bottom of the degassing tank. The operator opens the drainage channel, and the remaining aluminum liquid in the degassing tank is discharged to the outside from the drainage channel at the bottom of the tank. Due to the high pressure at the bottom of the degassing tank, when the aluminum liquid flows out from the bottom of the tank, it does not flow smoothly but sprays out quickly. During this process, the thin oxide layer formed on the top of the aluminum liquid is easily destroyed, and the aluminum liquid is easily exposed to air over a large area, resulting in severe oxidation. Utility Model Content
[0004] The technical problem to be solved by the utility model is to provide an aluminum liquid degassing device. When the remaining aluminum liquid in the degassing tank of the aluminum liquid degassing device is discharged, it will not contact the air in a large area, so it will not be greatly oxidized.
[0005] In order to solve the above technical problems, the aluminum liquid degassing device of the utility model comprises a degassing box, the degassing box is provided with a degassing tank with a tank opening facing upward and a liquid inlet channel leading to the degassing tank for aluminum liquid to flow into the degassing tank, a vertical hollow rotor and a driving motor are arranged on the degassing box, the upper end of the hollow rotor serves as an inlet end for nitrogen to enter, and the lower end extends into the degassing tank as an outlet end for nitrogen to be discharged into the aluminum liquid in the degassing tank to form nitrogen bubbles for degassing, the driving motor drives the hollow rotor to drive The hollow rotor rotates to break up nitrogen bubbles. The degassing box is provided with a liquid outlet channel, which leads to the degassing tank and is higher than the bottom wall of the degassing tank so that the aluminum liquid in the degassing tank can flow out. The aluminum liquid degassing device includes a cover covering the degassing tank port, a driving mechanism for driving the cover, the hollow rotor and the driving motor to move away from the degassing tank, and a graphite block and a liquid pressing mechanism. The liquid pressing mechanism drives the graphite block to be pressed into the degassing tank so that the aluminum liquid level in the degassing tank rises to a level higher than the liquid outlet channel, thereby pressing the aluminum liquid into the liquid outlet channel.
[0006] Furthermore, the degassing box is provided with aluminum liquid channels in left and right directions in front of the degassing tank; the right end of the aluminum liquid channel is a liquid inlet end for the aluminum liquid to flow in, the front end of the liquid inlet channel leads to the right part of the aluminum liquid channel, and the rear end leads to the right part of the degassing tank; the left end of the aluminum liquid channel is a liquid outlet end for the aluminum liquid to flow out, the front end of the liquid outlet channel leads to the left part of the aluminum liquid channel, and the rear end leads to the left part of the degassing tank; the liquid outlet channel and the liquid inlet channel are at the same height, and a block is blocked in the middle of the aluminum liquid channel.
[0007] Furthermore, the blocking block can be pulled out from the middle of the aluminum liquid channel and plugged into the right end of the aluminum liquid channel.
[0008] Furthermore, a vertical partition is provided in the degassing tank, which separates the left and right parts of the degassing tank. A through hole is opened at the bottom of the vertical partition, and the left and right parts of the degassing tank are interconnected through the through hole; there are two left and right hollow rotors, and the lower ends of the left and right hollow rotors extend into the left and right parts of the degassing tank respectively, and there are two left and right driving motors respectively, and the left and right driving motors drive the left and right hollow rotors respectively; there are two left and right graphite blocks, and the liquid pressing mechanism drives the left and right graphite blocks to be pressed into the left and right parts of the degassing tank respectively so that the aluminum liquid level in the left and right parts of the degassing tank rises to be higher than the liquid outlet channel and the liquid inlet channel, thereby pressing the aluminum liquid into the liquid outlet channel and the liquid inlet channel.
[0009] Furthermore, the lower end of the hollow rotor specifically extends to the bottom of the degassing tank.
[0010] Furthermore, the driving mechanism includes an electric push rod, a driving motor and a connecting piece located on the left side of the degassing box, the movable rod of the electric push rod faces upward, the driving motor is installed on the upper end of the movable rod, the driving shaft of the driving motor faces upward, the connecting piece is installed on the driving shaft of the driving motor, the right end of the connecting piece is connected to the cover, and the hollow rotor and the driving motor are installed on the cover; the movable rod of the electric push rod can be extended upward to drive the cover, the hollow rotor installed on the cover and the driving motor to move upward through the driving motor and the connecting piece until the hollow rotor leaves the degassing tank, and the driving motor can drive the connecting piece to rotate and drive the cover, the driving motor installed on the cover and the hollow rotor that has left the degassing tank to rotate to the left and move away from the degassing tank.
[0011] Furthermore, the driving mechanism also serves as a liquid pressing mechanism; the aluminum liquid degassing device includes a mounting plate, the left end of the connecting piece is connected to the mounting plate, and the graphite block is installed on the mounting plate. The driving motor can drive the connecting piece to rotate and drive the cover, the hollow rotor and the driving motor to rotate to the left and move away from the degassing tank and drive the mounting plate and the graphite block to rotate to the right and move to the top of the degassing tank. The movable rod of the electric push rod can retract downward to drive the mounting plate to move downward, thereby driving the graphite block to be pressed downward into the degassing tank.
[0012] Furthermore, a gap is left between the graphite block and the wall of the degassing tank.
[0013] The aluminum liquid degassing device of the utility model is provided with a driving mechanism, a graphite block and a liquid pressing mechanism. After the degassing is completed, the operator discharges the remaining aluminum liquid in the degassing tank by the following operations: first, the driving mechanism drives the cover, the hollow rotor and the driving motor to move away from the degassing tank, and then the liquid pressing mechanism drives the graphite block to slowly press into the degassing tank, so that the aluminum liquid level in the degassing tank slowly rises to be higher than the liquid outlet channel, and then the remaining aluminum liquid in the degassing tank will flow out smoothly from the liquid outlet channel. When the remaining aluminum liquid in the degassing tank flows out smoothly from the liquid outlet channel, a thin oxide layer is formed on the top of the aluminum liquid. The thin oxide layer moves smoothly with the aluminum liquid in the liquid outlet channel, thereby separating the air from the aluminum liquid below the thin oxide layer, avoiding large-area contact of the aluminum liquid with the air, and the aluminum liquid will not be greatly oxidized. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of an aluminum liquid degassing device, in which a hollow rotor extends into a degassing tank, and arrows are used to schematically indicate the flow direction of the aluminum liquid.
[0015] Figure 2 It is a cross-sectional schematic diagram of the degassing tank, connectors, cover and hollow rotor, in which the direction of movement of nitrogen is schematically drawn with arrows.
[0016] Figure 3 It is a schematic diagram of the aluminum liquid degassing device, in which the hollow rotor moves upward and leaves the degassing tank.
[0017] Figure 4is a schematic diagram of an aluminum liquid degassing device, in which a cover, a hollow rotor and a drive motor are moved away from above the degassing tank, and a mounting plate and a graphite block are moved to above the degassing tank.
[0018] Figure 5 It is a schematic diagram of the aluminum liquid degassing device. In the figure, the graphite block is pressed into the degassing tank, and the flow direction of the aluminum liquid is schematically drawn with arrows. DETAILED DESCRIPTION
[0019] The present invention is further described in detail below in conjunction with specific implementation methods.
[0020] Aluminum liquid degassing device Figure 1 , Figure 2 and Figure 3 , including a degassing box 1, the degassing box 1 is provided with a degassing pool 10 with a pool opening 100 facing upward, a vertical partition 103 is provided in the degassing pool 10, the vertical partition 103 separates the left part 101 and the right part 102 of the degassing pool 10, and a through hole 104 is provided at the bottom of the vertical partition 103, and the left part 101 and the right part 102 of the degassing pool 10 are connected to each other through the through hole 104. The degassing box 1 is provided with a left-right direction aluminum liquid channel 13, a front-back direction liquid inlet channel 12 and a liquid outlet channel 11 in the front of the degassing pool 10, the front end of the liquid inlet channel 12 leads to the right part of the aluminum liquid channel 13, and the rear end leads to the right part 102 of the degassing pool 1, the front end of the liquid outlet channel 11 leads to the left part of the aluminum liquid channel 13, and the rear end leads to the left part 101 of the degassing pool 1. The liquid inlet channel 12 and the liquid outlet channel 11 are located at the same height and both are higher than the bottom wall of the degassing pool 10. A block 14 is plugged in the middle of the aluminum liquid channel 13. The aluminum liquid degassing device includes a cover 15, and the cover 15 covers the pool opening 100 of the degassing pool 10. The cover 15 is equipped with left and right driving motors 21, 22 and left and right vertical hollow rotors 23, 24. The lower ends 231, 241 of the left and right hollow rotors 23, 24 respectively pass through the cover 15 downward and extend into the left part 101 and the right part 102 of the degassing pool 10, respectively. The lower end 231 of the left hollow rotor 23 extends to the bottom of the left part 101 of the degassing pool 10, and the lower end 241 of the right hollow rotor 24 extends to the bottom of the right part 102 of the degassing pool 10. The left and right driving motors 21, 22 are connected to the left and right hollow rotors 23, 24 through synchronous belt drive, respectively, and can drive the left and right hollow rotors 23, 24 to rotate around the vertical axes of the left and right hollow rotors 23, 24, respectively. The aluminum liquid degassing device includes an air pump (not shown in the figure) and a nitrogen gas source (not shown in the figure). The air inlet end of the air pump is connected to the nitrogen gas source, and the air outlet end is connected to the upper ends 232 and 242 of the left and right hollow rotors 23 and 24 through a plastic air pipe.
[0021] See Figure 1 and Figure 2The right end 132 of the aluminum liquid channel 13 is used as the liquid inlet end. When the operator is degassing the aluminum liquid, the aluminum liquid will first flow smoothly from the right end 132 of the aluminum liquid channel 13 into the right part of the aluminum liquid channel 13. Since the block 14 is plugged in the middle of the aluminum liquid channel 13, the aluminum liquid will not flow from the right part of the aluminum liquid channel 13 to the left part of the aluminum liquid channel 13, but will flow smoothly into the liquid inlet channel 12, and then flow smoothly into the right part 102 of the degassing tank 10 from the liquid inlet channel 12. Since the left part 101 and the right part 102 of the degassing tank 10 are interconnected through the through hole 104 at the bottom of the partition 103, some aluminum liquid will flow from the right part 102 of the degassing tank 10 to the left part 101 of the degassing tank 10, and the liquid levels of the left part 101 of the degassing tank 10 and the right part 102 of the degassing tank 10 are consistent. The operator starts the air pump and lets the air pump pump the nitrogen gas source to the upper ends 232, 242 of the left and right hollow rotors 23, 24. The upper ends 232, 242 of the left and right hollow rotors 23, 24 serve as air inlet ends. The nitrogen enters the left and right hollow rotors 23, 24 from the upper ends 232, 242 of the left and right hollow rotors 23, 24, respectively, and then moves downward along the left and right hollow rotors 23, 24 to the lower ends 231, 241 of the left and right hollow rotors 23, 24. The lower ends 231 and 241 of the left and right hollow rotors 23 and 24 serve as gas outlets, and nitrogen is discharged from the lower end 231 of the left hollow rotor 23 into the aluminum liquid in the left part 101 of the degassing tank 10, and from the lower end 241 of the right hollow rotor 24 into the aluminum liquid in the right part 102 of the degassing tank 10, thereby forming nitrogen bubbles in the aluminum liquid in the degassing tank 10. The operator drives the left and right driving motors 21 and 22 to drive the left and right hollow rotors 23 and 24 to rotate around the vertical axes of the left and right hollow rotors 23 and 24, respectively. In this process, the lower ends 231 and 241 of the left and right hollow rotors 23 and 24 respectively break up the larger nitrogen bubbles in the degassing tank 10 into a large number of tiny nitrogen bubbles. The nitrogen bubbles float in the aluminum liquid, and take away the hydrogen in the aluminum liquid during the floating process. After the nitrogen bubbles float up, they will fill the top of the degassing tank 10, and the hydrogen and excess nitrogen will be discharged from the liquid inlet channel 12 and the liquid outlet channel 11, so that the outside air will not enter the top of the degassing tank 10 from the liquid inlet channel 12 and the liquid outlet channel 11, avoiding the aluminum liquid in the degassing tank 10 from contacting the air over a large area when the left and right hollow rotors 23 and 24 rotate.
[0022] As the aluminum liquid continuously flows from the right end 132 of the aluminum liquid channel 13 into the right part of the aluminum liquid channel 13 and flows from the right part of the aluminum liquid channel 13 into the degassing tank 10 through the liquid inlet channel 12, the liquid levels of the left part 101 and the right part 102 of the degassing tank 10 will rise slowly. When the liquid level of the left part 101 of the degassing tank 10 rises to be higher than the liquid outlet channel 11, the aluminum liquid in the left part 101 of the degassing tank 10 will flow out smoothly from the liquid outlet channel 11. The left end 131 of the aluminum liquid channel 13 serves as the liquid outlet end, and the aluminum liquid flows smoothly from the liquid outlet channel 11 into the left part of the aluminum liquid channel 13. As the block 14 is plugged in the middle of the aluminum liquid channel 13, the aluminum liquid will not flow to the right part of the aluminum liquid channel 13, but will flow out smoothly from the left end 131 of the aluminum liquid channel 13. The operator casts the aluminum liquid flowing out of the left end 131 of the aluminum liquid channel 13 into an ingot. When the aluminum liquid in the left part 101 of the degassing tank 10 flows out smoothly from the liquid outlet channel 11 and the aluminum liquid channel 13, a thin oxide layer is formed on the top of the aluminum liquid. The thin oxide layer moves smoothly with the aluminum liquid in the liquid outlet channel 11 and the aluminum liquid channel 13, thereby separating the aluminum liquid below the thin oxide layer from the air, preventing the aluminum liquid from contacting the air over a large area.
[0023] See Figure 1 and Figure 3 The aluminum liquid degassing device includes a driving mechanism 3, which includes an electric push rod 31, a driving motor 32 and a connecting member 33 located on the left side of the degassing box 1. The movable rod 311 of the electric push rod 31 faces upward, the driving motor 32 is installed on the upper end of the movable rod 311, the driving shaft of the driving motor 32 faces upward, the connecting member 33 is installed on the driving shaft of the driving motor 32, and the right end 332 of the connecting member 33 is connected to the cover 15. The aluminum liquid degassing device includes a mounting plate 43 and two graphite blocks 41 and 42 installed on the mounting plate 43. The two graphite blocks 41 and 42 are arranged left and right, and the left end 331 of the connecting member 33 is connected to the mounting plate 43.
[0024] After the degassing is completed, no more aluminum liquid flows from the right end 132 of the aluminum liquid channel 13 into the right part of the aluminum liquid channel 13, and no more aluminum liquid flows from the right part of the aluminum liquid channel 13 through the liquid inlet channel 12 into the degassing tank 10, so the aluminum liquid in the right part 101 of the degassing tank 10 no longer flows out from the liquid outlet channel 11. Figure 3 The operator first pulls out the block 14 plugged in the middle of the aluminum liquid channel 13 and then plugs it into the right end 132 of the aluminum liquid channel 13, and then extends the movable rod 311 of the electric push rod 31 of the driving mechanism 3 upward, thereby driving the cover 15, the left and right hollow rotors 23, 24 installed on the cover 15 and the left and right driving motors 21, 22 to move upward through the driving motor 32 and the connecting member 33, until the left and right hollow rotors 23, 24 leave the left part 101 and the right part 102 of the degassing tank 10 respectively. In this state, the cover 15, the left and right hollow rotors 23, 24 and the left and right driving motors 21, 22 are all located above the degassing tank 10. Figure 4, the operator drives the drive shaft of the drive motor 32 of the drive mechanism 3 to drive the connecting member 33 to rotate, and the right end 332 of the connecting member 33 drives the cover 15, the left and right hollow rotors 23, 24 and the left and right drive motors 21, 22 to rotate and move away from the top of the degassing tank 10 to the left, and the left end 331 of the connecting member 33 drives the mounting plate 43 and the two graphite blocks 41, 42 mounted on the mounting plate 43 to rotate to the right and approach the degassing tank 10, until the mounting plate 43 and the two graphite blocks 41, 42 mounted on the mounting plate 43 move to the top of the degassing tank 40. In this state, the two graphite blocks 41, 42 are aligned with the left part 101 and the right part 102 of the degassing tank 10, one on the left and one on the right. Figure 4 and 5, the driving mechanism 3 also serves as a liquid pressing mechanism. The operator allows the movable rod 311 of the electric push rod 31 to slowly retract downward, and the movable rod 331 drives the mounting plate 43 to slowly move downward through the driving motor 32 and the connecting member 33, thereby driving the two graphite blocks 41 and 42 installed on the mounting plate 43 to slowly press downward into the left part 101 and the right part 102 of the degassing tank 10. There is a gap between the left graphite block 41 and the side wall of the left part 101 of the degassing tank 10, and there is a gap between the right graphite block 42 and the side wall of the right part 102 of the degassing tank 10. As the left and right graphite blocks 41 and 42 are pressed into the left part 101 and the right part 102 of the degassing tank 10, the aluminum liquid level in the left part 101 and the right part 102 of the degassing tank 10 will slowly rise. When the aluminum liquid levels in the left part 101 and the right part 102 of the degassing tank 10 rise to be higher than the liquid outlet channel 11 and the liquid inlet channel 12, the aluminum liquid in the left part 101 of the degassing tank 10 will flow out smoothly from the liquid outlet channel 11, and the aluminum liquid in the right part 102 of the degassing tank 10 will flow out smoothly from the liquid inlet channel 12, that is, the left and right graphite blocks 41 and 42 respectively press the aluminum liquid in the left part 101 and the right part 102 of the degassing tank 10 into the liquid outlet channel 11 and the liquid inlet channel 12, and the aluminum liquid entering the liquid outlet channel 11 flows smoothly into the left part of the aluminum liquid channel 13 from the liquid outlet channel 11, and the aluminum liquid entering the liquid inlet channel 12 flows smoothly into the right part of the aluminum liquid channel 13 from the liquid inlet channel 12. Since the block 14 is plugged at the right end 132 of the aluminum liquid channel 13, the aluminum liquid entering the aluminum liquid channel 13 will not flow out from the right end 132 of the aluminum liquid channel 13, but will flow out smoothly from the left end 131 of the aluminum liquid channel 13, and the operator will cast the aluminum liquid flowing out from the left end 131 of the aluminum liquid channel 13 into an ingot. When the remaining aluminum liquid in the left part 101 of the degassing tank 10 flows out smoothly from the liquid outlet channel 11 and the aluminum liquid channel 13, a thin oxide layer is formed on the top of the aluminum liquid. The thin oxide layer moves smoothly with the aluminum liquid in the liquid outlet channel 11 and the aluminum liquid channel 13, thereby separating the air from the aluminum liquid below the thin oxide layer, preventing the aluminum liquid from contacting the air over a large area, and the aluminum liquid will not be significantly oxidized. Similarly, when the remaining aluminum liquid in the right part 102 of the degassing tank 10 flows out smoothly from the liquid inlet channel 12 and the aluminum liquid channel 13, a thin oxide layer will also be formed on the top of the aluminum liquid. The thin oxide layer moves smoothly with the aluminum liquid in the liquid inlet channel 12 and the aluminum liquid channel 13, thereby separating the air from the aluminum liquid below the thin oxide layer, preventing the aluminum liquid from contacting the air over a large area, and the aluminum liquid will not be significantly oxidized. The height of the left graphite block 41 is the same as the depth of the left part 101 of the degassing tank 10, and the height of the right graphite block 42 is the same as the depth of the right part 102 of the degassing tank 10. The left and right graphite blocks 41 and 42 are completely pressed into the left part 101 and the right part 102 of the degassing tank 10, so that most of the aluminum liquid in the degassing tank 10 is discharged so that the aluminum liquid can be used, and only a small amount of aluminum liquid will remain in the degassing tank 10.
[0025] See Figure 3 , Figure 4 and Figure 5In this embodiment, the driving mechanism 3 also serves as a hydraulic mechanism, and the electric push rod 31 can drive the left and right hollow rotors 23 and 24 upward to leave the degassing tank 10, and can also drive the left and right graphite blocks 41 and 42 downward to press into the degassing tank 10. In other embodiments: the electric push rod 31 of the driving mechanism 3 only has the function of driving the left and right hollow rotors 23 and 24 upward to leave the degassing tank 10, and the electric push rod 31 is a driving electric push rod; the hydraulic mechanism includes a hydraulic push rod (not shown in the figure) located above the degassing box 10, the movable rod of the hydraulic push rod faces downward, the mounting plate 43 is mounted on the lower end of the movable rod, and the left and right graphite blocks 41 and 42 are mounted on the mounting plate 43; after the degassing is completed, the operator lets the driving mechanism 3 drive the left and right hollow rotors 23 and 24 upward to leave the degassing tank 10. 4 moves upward away from the degassing tank 10 and drives the cover 15, the left and right hollow rotors 23, 24 installed on the cover 15 and the left and right driving motors 21, 22 to move away from the degassing tank 10, and then the movable rod of the electric push rod of the liquid pressing mechanism is slowly extended downward to drive the mounting plate 15 to move slowly downward, thereby driving the left and right graphite blocks 41, 42 installed on the mounting plate 15 to be slowly pressed downward into the left part 101, the right part 102 of the degassing tank 10, so that the aluminum liquid level in the left part 101, the right part 102 of the degassing tank 10 slowly rises.
[0026] The above is only an implementation method of the invention, and does not limit the scope of patent protection. Those skilled in the art can make non-substantial changes or substitutions based on the invention, which still fall within the scope of patent protection.
Claims
1. A degassing device for aluminum liquid, comprising a degassing box, the degassing box is provided with a degassing tank with an upward tank opening and a liquid inlet channel leading to the degassing tank for aluminum liquid to flow into the degassing tank, the degassing box is provided with a vertical hollow rotor and a driving motor, the upper end of the hollow rotor serves as an inlet end for nitrogen to enter, the lower end extends into the degassing tank, serves as an outlet end for nitrogen to be discharged into the aluminum liquid in the degassing tank to form nitrogen bubbles for degassing, the driving motor drives the hollow rotor to drive the hollow rotor to rotate and break up the nitrogen bubbles, the degassing box is provided with a liquid outlet channel, the liquid outlet channel leads to the degassing tank and is higher than the bottom wall of the degassing tank for aluminum liquid in the degassing tank to flow out, the aluminum liquid degassing device comprises a cover covering the tank opening of the degassing tank, characterized in that: The invention comprises a driving mechanism for driving a cover, a hollow rotor and a driving motor to move away from a degassing tank, and comprises a graphite block and a liquid pressing mechanism. The liquid pressing mechanism drives the graphite block to be pressed into the degassing tank so that the aluminum liquid level in the degassing tank rises to a level higher than a liquid outlet channel, thereby pressing the aluminum liquid into the liquid outlet channel.
2. The aluminum liquid degassing device according to claim 1, characterized in that: The degassing box is provided with aluminum liquid channels in left and right directions in front of the degassing tank; the right end of the aluminum liquid channel is the liquid inlet end for the aluminum liquid to flow in, the front end of the liquid inlet channel leads to the right part of the aluminum liquid channel, and the rear end leads to the right part of the degassing tank; the left end of the aluminum liquid channel is the liquid outlet end for the aluminum liquid to flow out, the front end of the liquid outlet channel leads to the left part of the aluminum liquid channel, and the rear end leads to the left part of the degassing tank; the liquid outlet channel is at the same height as the liquid inlet channel, and a block is blocked in the middle of the aluminum liquid channel.
3. The aluminum liquid degassing device according to claim 2 is characterized in that: The block can be pulled out from the middle of the aluminum liquid channel and plugged into the right end of the aluminum liquid channel.
4. The aluminum liquid degassing device according to claim 3 is characterized in that: A vertical partition is arranged in the degassing tank, which separates the left and right parts of the degassing tank. A through hole is opened at the bottom of the vertical partition, and the left and right parts of the degassing tank are interconnected through the through hole; there are two left and right hollow rotors, and the lower ends of the left and right hollow rotors extend into the left and right parts of the degassing tank respectively. There are two left and right driving motors respectively, and the left and right driving motors drive and connect the left and right hollow rotors respectively; there are two left and right graphite blocks, and the liquid pressing mechanism drives the left and right graphite blocks to be pressed into the left and right parts of the degassing tank respectively to raise the aluminum liquid level of the left and right parts of the degassing tank to be higher than the liquid outlet channel and the liquid inlet channel, thereby pressing the aluminum liquid into the liquid outlet channel and the liquid inlet channel.
5. The aluminum liquid degassing device according to claim 1, characterized in that: The lower end of the hollow rotor specifically extends to the bottom of the degassing tank.
6. The aluminum liquid degassing device according to claim 1, characterized in that: The driving mechanism includes an electric push rod, a driving motor and a connecting piece located on the left side of the degassing box, the movable rod of the electric push rod faces upward, the driving motor is installed on the upper end of the movable rod, the driving shaft of the driving motor faces upward, the connecting piece is installed on the driving shaft of the driving motor, the right end of the connecting piece is connected to the cover, and the hollow rotor and the driving motor are installed on the cover; the movable rod of the electric push rod can be extended upward to drive the cover, the hollow rotor installed on the cover and the driving motor to move upward through the driving motor and the connecting piece until the hollow rotor leaves the degassing tank, and the driving motor can drive the connecting piece to rotate and drive the cover, the driving motor installed on the cover and the hollow rotor that has left the degassing tank to rotate to the left and move away from the degassing tank.
7. The aluminum liquid degassing device according to claim 6, characterized in that: The driving mechanism also serves as a liquid pressing mechanism; the aluminum liquid degassing device includes a mounting plate, the left end of the connecting piece is connected to the mounting plate, and the graphite block is installed on the mounting plate. The driving motor can drive the connecting piece to rotate and drive the cover, the hollow rotor and the driving motor to rotate to the left and move away from the degassing tank and drive the mounting plate and the graphite block to rotate to the right and move to the top of the degassing tank. The movable rod of the electric push rod can be retracted downward to drive the mounting plate to move downward, thereby driving the graphite block to be pressed downward into the degassing tank.
8. The aluminum liquid degassing device according to claim 1, characterized in that: There is a gap between the graphite block and the wall of the degassing tank.