Two-stage multi-channel water filtering device

Abstract

The invention discloses a two-stage multi-channel water filtering device which comprises a channel selection device, a rough filtering unit, a fine filtering unit and a housing, wherein the rough filtering unit and the fine filtering unit are serially arranged in the housing; the channel selection device penetrates the interior of the fine filtering unit and are fixedly connected with the fine filtering unit and the rough filtering unit respectively; the fine filtering unit comprises a plurality of fine filtering plates; the fine filtering plates locally cling to each other and are coaxially and serially arranged; the channel selection device comprises a central barrel and a plunger; the central barrel and the plunger form a plug valve structure; the plunger is a cylindrical valve core in which a plurality of channels are formed; different channels are selected for filtering by rotating the plunger. According to the two-stage multi-channel water filtering device, the filtering precision is improved and the overall volume and the weight of the filtering device are reduced; the working states of the multiple layers of filtering plates of the plug valve structure can be switched, so that the areas of the filtering units are enlarged, the assimilative capacity is increased, and the service life of the filtering device is prolonged; the filtering device is compact in structure and convenient to operate.

Description

technical field [0001] The present invention relates to a filtering device, in particular to a water filtering device suitable for a space station. Background technique [0002] The main function of the space station water treatment system is to regenerate the condensed water, urine and other mixed water inside the space station to provide various water resources needed by astronauts. Water treatment generally needs to filter the collected water first to remove solid particles, hair and macromolecular pollutants in the water, so as to reduce the pollution to subsequent valve bodies and processors. Generally, the aerospace water filter device adopts a single-stage structure. Once the filter screen component fails, the overall filter device will fail, affecting the performance of the entire system. At the same time, the filter screen and membrane in the filter device are consumables and need to be replaced during their life cycle. However, this structure is not suitable for t...

AI Technical Summary

Problems solved by technology

Generally, aerospace water filter devices adopt a single-stage structure. Once the filter component fails, the filter device will fail as a whole and affect the performance of the entire system. At the same time, the filter screen and membrane in the filter device are consumables and need to be replaced within their life cycle. , but this structure is not suitable for replacement of the filter screen and membrane, only the filter device can be replaced as a whole, and due to the single-layer structure, the overall life of the filter device is short and the number of replacements is large, which increases the operation of the astronauts on the space station.

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