Gas filtering device and vacuum die-casting device

Abstract

The invention discloses a gas filtering device and a vacuum die-casting device. The gas filtering device comprises a housing unit with an inlet for gas to be cleaned, a filter core arranged inside thehousing unit, a gas inlet pipe which is arranged in the housing unit and communicates with a gas inlet of the filter core, a gas outlet pipe which is arranged on the housing unit, wherein a side wallof the filter core is provided with slits penetrating through the side wall, the gas to be cleaned can be rotated in the filter core such that impurities in the gas can be taken out from the slits, the upper end of the gas outlet pipe is provided with at least one opening, the lower end of the gas outlet pipe extends into the filter core and is provided with one or more openings, and the cleanedgas flows out of the filtering device through the gas outlet pipe. According to the device, while the separation of the gas and the impurities can be achieved, the vacuuming efficiency is ensured, therealization of the stable and efficient vacuuming of the vacuum die-casting device is facilitated, and the vacuum degree of a vacuum die-casting cavity is improved.

Description

technical field [0001] The invention relates to a filter device, in particular to a filter device for a vacuum die-casting air suction pipe, and a vacuum die-cast device using the gas filter device. Background technique [0002] Aluminum alloy has the advantages of high specific strength, good manufacturability, and low cost, and is widely used in industries such as automobiles, communications, and electronics. Die casting is an important precision forming method widely used in the manufacture of aluminum alloy components. During die-casting, the die-casting machine presses molten metal into the cavity formed by the metal mold at a very high speed. After the molten metal cools down, the mold is opened and the casting is taken out. Due to the extremely high filling speed, the gas in the cavity is too late to be completely discharged, and is involved in the casting, forming pores. Vacuum die-casting is based on traditional die-casting, adding a powerful vacuum system to part...

AI Technical Summary

Problems solved by technology

This may eventually lead to a decrease in vacuum efficiency or even a blockage of the vacuum line, and in the worst case, may lead to failure of the vacuum pump

[0004] In the past, the filter often used a porous structure, and the impurity particles could not pass through the pores smaller than themselves, so they were filtered out.

However, this separation device will reduce the extraction efficiency, and at the same time, it is easy to block and must be replaced frequently

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