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2. 发明公开

EP0556576A1 Method and apparatus for continuous vacuum degassing of molten materials 失效
标题翻译： Verfahren und Vorrichtung zur kontinuierlichen Vakuumentgasung von geschmolzenen Massen。
公开(公告)号：EP0556576A1
公开(公告)日：1993-08-25
申请号：EP93100809.8
申请日：1993-01-20
申请人： ASAHI GLASS COMPANY LTD.
发明人： Kazuhiko, Ishimura, c/o Asahi Glass Company Ltd. , Fumiaki, Saito, c/o Asahi Glass Company Ltd. , Masaaki, Yoshikawa, c/o Asahi Glass Company Ltd. , Misao, Okada, c/o Asahi Glass Company Ltd. , Shinsuke, Nakajima, c/o Asahi Glass Company Ltd.
IPC分类号： C03B5/225 , C21C7/10 , C22B9/04
CPC分类号： C22B9/04 , C03B5/1875 , C03B5/2252 , C03B5/28 , C21C7/10 , Y10S261/19
摘要： A vacuum degassing method wherein a molten substance, such as molten glass or molten metal, at an elevated temperature in a storage tank (3) is sucked to a vacuum degassing vessel (12) through an uprising pipe (13) connecting the storage tank (3) and the vacuum degassing vessel (12) by maintaining the vacuum degassing vessel at a negative pressure, the molten substance is degassed and the degassed molten substance falls to a guiding duct (5) through a downfalling pipe (14) connecting the vacuum degassing vessel (12) and the guiding duct (5) whereby according to one embodiment a first flow quantity of the molten substance rising in the uprising pipe (13) is restrained by a first controlling means (20) and a second flow quantity thereof falling in the downfalling pipe (14) is controlled by a second controlling means (21) thereby maintaining a quantity of the molten substance in the vacuum degassing vessel at a pertinent amount.
In another embodiment (see figure 8), the bottom of the uprising pipe (152) of the vacuum degassing vessel (11) is connected upstream via a horizontal passage to a second downfalling pipe (162) and the bottom of the downfalling pipe (163) of the vacuum vessel is connected via a further horizontal passage to a second uprising pipe (153). In this embodiment the means for restraining (166B) and controlling (168B) the flow are mounted in the upstream second downfalling pipe (162) and downstream second uprising pipe (153) respectively and both means are positioned outside the vacuum housing (11).
摘要翻译：一种真空脱气方法，其中在储罐（3）中高温下的熔融物质如熔融玻璃或熔融金属通过连接储罐（3）的上升管（13）吸入真空脱气容器（12） 3）和真空脱气容器（12），通过将真空脱气容器保持在负压下，熔融物质脱气，脱气的熔融物质通过连接真空脱气的下降管（14）落到导管（5）容器（12）和引导管道（5），由此根据一个实施例，上升管（13）中上升的熔融物质的第一流量被第一控制装置（20）和第二流量落入下降管（14）由第二控制装置（21）控制，从而将真空脱气容器中的熔融物质的量保持在相关量。在另一个实施例中（见图8），真空脱气容器（11）的起立管（152）的底部经由水平通道连接到第二下降管（162）的上游，并且下降管（163）的底部）经由另一水平通道连接到第二起立管（153）。在本实施例中，分别在上游的第二下降管162和下游第二起立管153中分别安装限制（166B）和控制（168B）流量的装置，两个装置位于真空壳体11的外部。

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