通过进入地漏芯水流的变化，实现磁力密封地漏芯的打开与关闭。

The water flow entering the floor drain core changes to realize on or off of the magnetic seal floor drain core.

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一种双重机械密封地漏芯，由地漏芯上主体、浮子、地漏芯下主体和活动门组成。

A dual mechanical seal floor drain core is composed of an upper floor drain core body, a floater, a lower floor drain core body and a valve.

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一种双重机械密封地漏芯，由地漏芯上主体、浮子、地漏芯下主体和活动门组成。

A dual mechanical seal floor drain core is composed of an upper floor drain core body, a floater, a lower floor drain core body and a valve.

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