A degassing rotor structure with convective effect

Abstract

The invention discloses a degassing rotor structure with a convection function. The degassing rotor structure comprises a rotor body which is a discoid rotary table; a first end surface is arranged on the rotary table; a plurality of dividing grooves and a plurality of gas outlet grooves are formed in the first end surface which is conical convex and truncated cone-shaped convex; the dividing grooves are circularly uniformly distributed and extend in the generatrix direction of the first end surface separately; the gas outlet grooves are circularly uniformly distributed and extend in the generatrix direction of the first end surface separately; a rotor blade is formed by the end surface part between every two adjacent dividing grooves; the gas outlet grooves are formed in the rotor blades; aluminum liquid in a crucible furnace or a molten pool generates a lateral acting force to form a liquid stream which is formed in the crucible furnace or the molten pool, rotates from the bottom up, and has the continuous convection stirring function, so that bubbles generated by introduced gas can act on all corners of the crucible furnace or the molten pool.

Description

technical field [0001] The invention relates to equipment for smelting aluminum alloys, in particular to a degassing rotor structure for performing degassing treatment during the smelting of aluminum alloys. Background technique [0002] During the smelting process of aluminum alloy, due to the reaction of molten aluminum with oxygen and water vapor, oxidized inclusions and hydrogen gas are produced, which have many adverse effects on the subsequent smelting process. To solve this problem, the current common process is to use inert gas diffusion method, chlorine gas or mixed gas diffusion method to achieve the purpose of hydrogen removal and slag removal. Both of the above two processes need to use the degassing rotor to introduce gas into the aluminum alloy melt: the degassing rotor rotates at a high speed while introducing gas into the aluminum alloy melt. After the gas overflows from the bottom of the degassing rotor, it diffuses around. It is crushed into smaller bubble...

AI Technical Summary

Problems solved by technology

The degassing rotor for online refining hides the stirring teeth, reduces the surface turbulence when rotating at high speed, and optimizes the size of the inner cavity of the box. The generated air bubbles are evenly distributed, and the effect of degassing and slag removal is achieved efficiently. However, the above-mentioned technology In the scheme, the air bubbles generated by the introduction of gas have poor up-and-down convection in the crucible or molten pool, and it is easy to produce a dead zone at the bottom of the crucible or molten pool that cannot be affected, resulting in insufficient degassing

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