A high efficiency dual-rotor degassing device

Abstract

The utility model belongs to the technical field of molten aluminum purification equipment, concretely relates to a kind of high-efficiency double-rotor degassing equipment, including degassing tank body, the top of degassing tank body is equipped with degassing tank cover, the inside of degassing tank body is equipped with first degassing chamber, second degassing chamber and static chamber, first degassing chamber and second degassing chamber and static chamber are separated by degassing chamber partition, second degassing chamber and static chamber are separated by static chamber partition, and the bottom of degassing chamber partition and static chamber partition is equipped with the passage for molten aluminum to flow through, first degassing chamber is equipped with first rotor and first heater, second degassing chamber is equipped with second rotor, static chamber is equipped with second heater, the side of degassing tank body is equipped with molten aluminum inlet and molten aluminum outlet, and molten aluminum inlet and molten aluminum outlet are connected with first degassing chamber and static chamber respectively. The device has the advantages of simple structure, reasonable design, low cost, easy assembly and disassembly, easy implementation, etc. It realizes the dual purpose of economy and efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of aluminum liquid purification equipment, specifically relating to a high-efficiency dual-rotor degassing device. Background Technology

[0002] Currently, in the aluminum product manufacturing process, the hydrogen content in molten aluminum is a key factor affecting product quality. Dual-rotor degassing equipment is a commonly used aluminum molten aluminum purification device, designed to achieve two-stage hydrogen removal from the molten aluminum through a dual-chamber structure. Existing dual-rotor degassing equipment typically includes a first degassing chamber and a second degassing chamber. The molten aluminum first enters the first degassing chamber, where it undergoes rotor hydrogen removal, and then enters the second degassing chamber through a channel at the bottom of the partition. However, because the second degassing chamber is directly connected to the aluminum molten aluminum outlet, some molten aluminum flows directly out of the outlet to the next process without undergoing the rotor hydrogen removal treatment in the second degassing chamber. This results in the dual-rotor degassing equipment failing to achieve the expected dual-rotor hydrogen removal effect, leading to incomplete hydrogen removal of some molten aluminum and affecting the stability of aluminum product quality.

[0003] Therefore, improvements are urgently needed. Utility Model Content

[0004] To address the aforementioned deficiencies in existing technologies, this utility model provides a high-efficiency dual-rotor degassing device, comprising a degassing chamber with a degassing chamber cover on top. The interior of the degassing chamber includes a first degassing chamber, a second degassing chamber, and a settling chamber. The first degassing chamber is separated from the second degassing chamber and the settling chamber by a degassing chamber partition, and the second degassing chamber is separated from the settling chamber by a settling chamber partition. Both the degassing chamber partition and the settling chamber partition have aluminum molten material channels at their bottoms for aluminum molten material to flow through. The first degassing chamber contains a first rotor and a first heater, the second degassing chamber contains a second rotor, and the settling chamber contains a second heater. One side of the degassing chamber has an aluminum molten material inlet and an aluminum molten material outlet, which are respectively connected to the first degassing chamber and the settling chamber. Optionally, the degassing box includes a degassing box shell, a degassing box insulation layer, and a degassing box lining arranged sequentially from the outside to the inside.

[0005] Specifically, it can reduce heat loss from molten aluminum.

[0006] Optionally, a drain port is provided at the bottom of the degassing box, and a discharge device is provided at the drain port.

[0007] Optionally, a first drive motor and a second drive motor are provided on the top of the degassing box cover, and the first drive motor and the second drive motor are used to drive the first rotor and the second rotor to rotate, respectively.

[0008] Optionally, both the first rotor and the second rotor are provided with protective gas pipes for introducing argon or nitrogen into the first degassing chamber and the second degassing chamber, and both the first degassing chamber and the second degassing chamber are also provided with exhaust ports.

[0009] Optionally, the settling chamber partition is inserted into the degassing box via a slot, and two positioning blocks are provided at the bottom of both sides of the settling chamber partition.

[0010] Specifically, this connection method facilitates assembly, disassembly, and maintenance, while the two positioning blocks can accurately position the bottom of the static chamber partition.

[0011] Optionally, an airlock device is installed at both the aluminum liquid inlet and the aluminum liquid outlet.

[0012] Specifically, the airlock device is shaped like the number 7, with the bottom of the airlock device being lower than the bottom of the inlet and outlet flow channels. This is used to prevent outside air from entering the degassing chamber and avoid affecting the dehydrogenation effect of the aluminum liquid.

[0013] This invention also includes other components that enable the normal operation of a high-efficiency dual-rotor degassing device, all of which are conventional techniques in the art. Furthermore, any devices or components not specified in this invention employ conventional techniques in the art, such as a first drive motor, a second drive motor, a first heater, and a second heater.

[0014] The working principle of this invention is as follows: molten aluminum flows in through the aluminum inlet on the degassing chamber, is sealed by an airlock device, and enters the first degassing chamber. Argon or nitrogen gas is introduced into the first rotor in the first degassing chamber. The first rotor rotates and agitates the molten aluminum, simultaneously breaking the gas into fine bubbles. These bubbles react physically with the hydrogen in the molten aluminum, removing some hydrogen and impurities. Subsequently, the heater in the first chamber heats the molten aluminum to maintain a stable temperature. The molten aluminum, after being treated in the first degassing chamber, flows into the second degassing chamber through the aluminum liquid passage at the bottom of the degassing chamber partition. Argon or nitrogen gas is introduced into the second rotor in the second degassing chamber. The rotation of the second rotor agitates the molten aluminum again and breaks up the gas, forming fine bubbles that react with the remaining hydrogen in the molten aluminum, completing the second hydrogen removal and impurity removal process. After the second hydrogen removal, the molten aluminum flows into the settling chamber through the aluminum liquid passage at the bottom of the settling chamber partition. The second heater in the settling chamber heats and keeps the molten aluminum at a stable temperature. Finally, the molten aluminum is sealed by the gas lock device at the molten aluminum outlet and flows out from the molten aluminum outlet to the next process, completing the entire hydrogen removal process.

[0015] The beneficial effects of this utility model are: (1) Improved hydrogen removal effect: By adding a partition in the settling chamber, the flow path of the aluminum liquid in the degassing box is changed, ensuring that all aluminum liquids pass through the first degassing chamber and the second degassing chamber for two hydrogen removal treatments in sequence, and then flow through the settling chamber. This completely solves the problem of some aluminum liquids not being dehydrogenated twice, significantly improves the hydrogen removal effect, and ensures the stability of aluminum product quality. (2) Operation and cost optimization: Under the premise that the original dual-rotor degassing equipment remains unchanged in size and other parts do not need to be replaced, only a settling chamber partition is added, and the cost increases very little; at the same time, since the hydrogen removal effect is stable, there is no need to frequently adjust the argon (or nitrogen) gas intake and rotor speed, which reduces the labor intensity and technical operation requirements of employees and improves the production efficiency of enterprises. (3) High practicality: The partition of the static room adopts a slot connection method and is positioned with the bottom positioning block. It is easy to assemble, disassemble and maintain, and can be quickly replaced after damage without affecting normal production; and no additional fixed asset investment is required, which meets the economic needs of enterprises. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 for Figure 1 A sectional view along the DD direction.

[0019] Figure 3 for Figure 1 The left view.

[0020] Figure 4 This is a schematic diagram of the structure of the airlock device of this utility model.

[0021] In the diagram: 1. Degassing chamber cover, 2. Degassing chamber body, 3. Aluminum liquid inlet, 4. Aluminum liquid outlet, 5. Degassing chamber shell, 6. Degassing chamber insulation layer, 7. First heater, 8. Second rotor, 9. Degassing chamber lining, 10. Positioning block, 11. Settling chamber partition, 12. First degassing chamber, 13. Second heater, 14. Second degassing chamber, 15. Degassing chamber partition, 16. Settling chamber, 17. First rotor, 18. Airlock device, 19. Discharge device. Detailed Implementation

[0022] The present invention will now be clearly described with reference to the accompanying drawings and specific embodiments. This description is merely for explaining the present invention and is not intended to limit it. Any modifications, equivalent substitutions, improvements, etc., made by those skilled in the art based on the embodiments of the present invention without inventive effort to obtain all other embodiments should be included within the protection scope of the present invention.

[0023] Example like Figure 1-4 As shown, this utility model embodiment provides a high-efficiency dual-rotor degassing device, including a degassing box 2, a degassing box cover 1 on the top of the degassing box 2, and a first degassing chamber 12, a second degassing chamber 14, and a settling chamber 16 inside the degassing box 2. The first degassing chamber 12 is separated from the second degassing chamber 14 and the settling chamber 16 by a degassing chamber partition 15, and the second degassing chamber 14 is separated from the settling chamber 16 by a settling chamber partition 11. Both the degassing chamber partition 15 and the settling chamber partition 11 have aluminum molten material channels at their bottoms for aluminum molten material to flow through. The settling chamber partition 11 is inserted into the degassing box 2 via a slot, and two positioning blocks 10 are provided on the bottom of both sides of the settling chamber partition 11. This connection method facilitates assembly, disassembly, and maintenance, and the two positioning blocks 10 can accurately position the bottom of the settling chamber partition 11. The first rotor 17 and the first heater 7 are installed in the gas chamber 12, the second rotor 8 is installed in the second degassing chamber 14, and the second heater 13 is installed in the settling chamber 16. The first rotor 17 and the second rotor 8 are both equipped with protective gas pipes for introducing argon or nitrogen into the first degassing chamber 12 and the second degassing chamber 14. The first degassing chamber 12 and the second degassing chamber 14 are also equipped with exhaust ports. An aluminum liquid inlet 3 and an aluminum liquid outlet 4 are provided on one side of the degassing box 2. The aluminum liquid inlet 3 and the aluminum liquid outlet 4 are respectively connected to the first degassing chamber 12 and the settling chamber 16. An airlock device 18 is provided at both the aluminum liquid inlet 3 and the aluminum liquid outlet 4. The airlock device 18 is shaped like the number 7. The bottom of the airlock device 18 is lower than the bottom of the inlet and outlet flow channels to prevent outside air from entering the interior of the degassing box 2 and avoid affecting the dehydrogenation effect of the aluminum liquid. In addition, the degassing chamber 2 includes a degassing chamber shell 5, a degassing chamber insulation layer 6, and a degassing chamber lining 9 arranged sequentially from the outside to the inside, which can reduce heat loss from the molten aluminum. A drain port is provided at the bottom of the degassing chamber 2, and a discharge device 19 is provided at the drain port. A first drive motor and a second drive motor are provided at the top of the degassing chamber cover 1, and the first drive motor and the second drive motor are respectively used to drive the first rotor 17 and the second rotor 8 to rotate.

[0024] The working principle of this invention is as follows: molten aluminum flows in through the molten aluminum inlet 3 on the degassing chamber 2, and is sealed by the airlock device 18 into the first degassing chamber 12. Argon or nitrogen gas is introduced into the first rotor 17 in the first degassing chamber 12. The first rotor 17 rotates and agitates the molten aluminum, simultaneously breaking the gas into fine bubbles. These bubbles react physically with the hydrogen in the molten aluminum, removing some hydrogen and impurities. Subsequently, the first chamber heater heats the molten aluminum to maintain a stable temperature. The molten aluminum treated by the first degassing chamber 12 flows into the second degassing chamber through the molten aluminum passage at the bottom of the degassing chamber partition 15. Argon or nitrogen gas is introduced into the second rotor 8 in the second degassing chamber 14. The second rotor 8 rotates and stirs the aluminum liquid again, breaking up the gas and forming fine bubbles that can react with the remaining hydrogen in the aluminum liquid, completing the second hydrogen removal and impurity removal process. After the second hydrogen removal, the aluminum liquid flows into the settling chamber 16 through the aluminum liquid passage at the bottom of the settling chamber partition 11. The second heater 13 in the settling chamber 16 heats and keeps the aluminum liquid at a stable temperature. Finally, the aluminum liquid is sealed by the gas lock device 18 at the aluminum liquid outlet 4 and flows out from the aluminum liquid outlet 4 to the next process, completing the entire hydrogen removal process.

[0025] The embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A high-efficiency dual-rotor degassing device, comprising a degassing chamber, characterized in that: The top of the degassing chamber is equipped with a degassing chamber cover. The interior of the degassing chamber is equipped with a first degassing chamber, a second degassing chamber, and a settling chamber. The first degassing chamber is separated from the second degassing chamber and the settling chamber by a degassing chamber partition. The second degassing chamber is separated from the settling chamber by a settling chamber partition. The bottom of both the degassing chamber partition and the settling chamber partition is equipped with an aluminum liquid passage for the aluminum liquid to flow through. The first degassing chamber is equipped with a first rotor and a first heater. The second degassing chamber is equipped with a second rotor. The settling chamber is equipped with a second heater. One side of the degassing chamber is equipped with an aluminum liquid inlet and an aluminum liquid outlet, which are respectively connected to the first degassing chamber and the settling chamber.

2. The high-efficiency dual-rotor degassing device according to claim 1, characterized in that: The degassing box includes, from the outside to the inside, a degassing box shell, a degassing box insulation layer, and a degassing box lining.

3. The high-efficiency dual-rotor degassing device according to claim 1, characterized in that: A drain port is provided at the bottom of the degassing chamber.

4. The high-efficiency dual-rotor degassing device according to claim 1, characterized in that: The top of the degassing box cover is equipped with a first drive motor and a second drive motor, which are used to drive the first rotor and the second rotor to rotate, respectively.

5. The high-efficiency dual-rotor degassing device according to claim 1, characterized in that: Both the first and second rotors are equipped with protective gas pipes inside.

6. The high-efficiency dual-rotor degassing device according to claim 1, characterized in that: The settling chamber partition is inserted into the degassing box via a slot, and two positioning blocks are provided at the bottom of both sides of the settling chamber partition.

7. The high-efficiency dual-rotor degassing device according to claim 1, characterized in that: Both the aluminum liquid inlet and outlet are equipped with airlock devices.

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