A powder spraying device with pressure relief function and precise control of spray volume

Abstract

The invention discloses a powder spraying device which has a pressure relief function and can accurately control the spray volume, which comprises a machine base, a dividing part is arranged in the middle of the machine base, and the inside of the machine base is divided into a material bin and a mixing bin; The feed port and the discharge port are connected to the feed bin and the mixing bin; slots are arranged in the horizontal direction in the division part, and the slots are provided with a sliding quantitative baffle, and the sliding quantitative baffle is provided with a quantitative opening; the tail end of the sliding quantitative baffle is provided with a pull rod; There is a high-pressure inlet pipe on the side of the mixing chamber, and the high-pressure inlet pipe is connected to the gas distribution part. The gas distribution part is equipped with an air injection pipe and a constant pressure pipe. The air injection pipe is inserted into the mixing chamber, and the constant pressure pipe is connected to the top of the material chamber; There is an aluminum liquid pool on the side, and the mixing chamber is provided with a protruding graphite tube, and the graphite tube is inserted into the aluminum liquid pool. The invention can quickly and accurately control the ejection amount of the refining agent, and ensure the continuous and stable concentration of the injected gas-powder mixture; in the case of blockage of the spray rod, the transportation of the refining agent can be suspended.

Description

technical field [0001] The invention relates to a powder spraying device which has a pressure relief function and precisely controls the spraying amount. Background technique [0002] The refining agent is a white powder or granular flux, which is prepared by mixing various inorganic salts in a certain proportion after drying. It is mainly used to remove hydrogen and floating oxidized slag inside the aluminum liquid. [0003] In the aluminum alloy refining process, a powder spraying device is required to spray the refining agent. However, the powder spraying device in the prior art has the following disadvantages: it is difficult to adjust the delivery amount of the refining agent in time according to the spraying situation ahead, and it cannot be conveniently adjusted according to the needs. Adjust the concentration of the injected gas-powder mixture, and the concentration of the injected gas-powder mixture cannot be guaranteed to be continuous and stable; when the graphite...

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Problems solved by technology

[0003] In the aluminum alloy refining process, a powder spraying device is required to spray the refining agent. However, the powder spraying device in the prior art has the following disadvantages: it is difficult to adjust the delivery amount of the refining agent in time according to the spraying situation ahead, and it cannot be conveniently adjusted according to the needs. Adjust the concentration of the injected gas-powder mixture, and the concentration of the injected gas-powder mixture cannot be guaranteed to be continuous and stable; when the graphite tube or the spray rod is completely blocked, the refining agent delivery mechanism may not be able to obtain the feedback signal in time, and it is still Transportation, resulting in excessive accumulation of refining agent in the entire pipeline, it is difficult to clean up; the delivery speed of refining agent will be related to the amount of refining agent in the container, and the delivery speed of refining agent is uneven

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