図１は、本発明の実施形態に係る炉壁構造を備えた溶融金属用保持炉１を示す。溶融金属用保持炉１は、図４に示すように、溶湯受入室２、溶湯保持室３及び溶湯汲出室４から構成され、各室は上から見て略矩形で、上方に開口している。溶湯受入室２は溶融金属用保持炉１の正面から見て左側後方に配置され、溶湯汲出室４は左側前方に配置され、溶湯保持室３は右側に配置されている。溶湯受入室２と溶湯汲出室４は、第１仕切壁５を介して隣接して配置されている。溶湯保持室３は、第２仕切壁６を介して溶湯受入室２と溶湯汲出室４に隣接して配置されている。
FIG. 1 shows a molten metal holding furnace 1 having a furnace wall structure according to an embodiment of the present invention. As shown in FIG. 4, the molten metal holding furnace 1 is composed of a molten metal receiving chamber 2, a molten metal holding chamber 3, and a molten metal pumping chamber 4, and each chamber is substantially rectangular when viewed from above and opens upward. .. The molten metal receiving chamber 2 is arranged on the left rear side when viewed from the front of the molten metal holding furnace 1, the molten metal pumping chamber 4 is arranged on the left front side, and the molten metal holding chamber 3 is arranged on the right side. The molten metal receiving chamber 2 and the molten metal pumping chamber 4 are arranged adjacent to each other via the first partition wall 5. The molten metal holding chamber 3 is arranged adjacent to the molten metal receiving chamber 2 and the molten metal pumping chamber 4 via the second partition wall 6.
溶湯受入室２の炉床面は、溶湯汲出室４の炉床面よりも高い位置に形成されている。溶湯保持室３の炉床面は、溶湯受入室２の炉床面と同じ高さにあり、溶湯保持室３の炉床面の一部（第２仕切壁６の第２連通開口８付近）は、１段低い溜り部３ａが形成され、該溜り部３ａの炉床面は、溶湯汲出室４の炉床面と同じ高さに形成されている。図２に示すように、第２仕切壁６の下部には、溶湯受入室２と溶湯保持室３を連通する第１連通開口７が形成されるとともに、溶湯保持室３と溶湯汲出室４を連通する第２連通開口８が形成されている。これにより、図４に示すように、溶湯受入室２、溶湯保持室３及び溶湯汲出室４は、溶融金属用保持炉１の上から見て、溶湯受入室２から第１連通開口７を介して溶湯保持室３に連通し、溶湯保持室３から第２連通開口８を介して溶湯汲出室４に連通するように、コ字形に配置されている。
The hearth surface of the molten metal receiving chamber 2 is formed at a position higher than the hearth surface of the molten metal pumping chamber 4. The hearth surface of the molten metal holding chamber 3 is at the same height as the hearth surface of the molten metal receiving chamber 2, and is a part of the hearth surface of the molten metal holding chamber 3 (near the second communication opening 8 of the second partition wall 6). Is formed with a reservoir 3a one step lower, and the hearth surface of the reservoir 3a is formed at the same height as the hearth surface of the molten metal pumping chamber 4. As shown in FIG. 2, a first communication opening 7 that communicates the molten metal receiving chamber 2 and the molten metal holding chamber 3 is formed in the lower part of the second partition wall 6, and the molten metal holding chamber 3 and the molten metal pumping chamber 4 are formed. A second communication opening 8 for communication is formed. As a result, as shown in FIG. 4, the molten metal receiving chamber 2, the molten metal holding chamber 3, and the molten metal pumping chamber 4 are viewed from above the molten metal holding furnace 1 through the molten metal receiving chamber 2 through the first communication opening 7. It is arranged in a U shape so as to communicate with the molten metal holding chamber 3 and communicate with the molten metal pumping chamber 4 from the molten metal holding chamber 3 through the second communication opening 8.
第１仕切壁５は、図８に示すように、第１内張層１６ａの炉床と一体構造で下部壁を構成する下部仕切壁５ａと、上部壁を構成する耐熱ボードの上部仕切壁５ｂとからなる。下部仕切壁５ａと上部仕切壁５ｂとの接合面は、内張層１６と同様に溶融金属中に位置する。また、第２仕切壁６は耐熱ボードで構成され、図９に示すように、両端が第２内張層１６ｂで保持され、下端が溶融金属中に位置する。
As shown in FIG. 8, the first partition wall 5 includes a lower partition wall 5a that constitutes a lower wall integrally with the hearth of the first lining layer 16a and an upper partition wall 5b of a heat-resistant board that constitutes the upper wall. It consists of. The joint surface between the lower partition wall 5a and the upper partition wall 5b is located in the molten metal like the lining layer 16 . Further, the second partition wall 6 is made of a heat-resistant board, both ends are held by the second lining layer 16b, and the lower end is located in the molten metal, as shown in FIG.
図４、図６、図９に示すように、溶融金属用保持炉１の第１仕切壁５の上部仕切壁５ｂの一方端は第２内張層１６ｂの側面に形成した凹形の溝２１に、他方端は第２仕切壁の側面に形成した凹形の溝２１に、また、第２仕切壁６の両端面は、第２内張層１６ｂの側面に形成した凹形の溝２１にそれぞれ接着剤を介して嵌合し接合するようにする。
As shown in FIGS. 4, 6 and 9, one end of the upper partition wall 5b of the first partition wall 5 of the molten metal holding furnace 1 is a concave groove 21 formed on the side surface of the second lining layer 16b. to, the other end concave groove 21 formed on the side surface of the second partition wall, also both end surfaces of the second partition wall 6, the groove 21 of the concave formed on the side surface of the second lining layer 16b Each is fitted and joined via an adhesive.