Container for supplying molten metal and safety device

A safety device of a container capable of storing a molten metal and allowing the molten metal to flow between an inside and an outside of the container owing to a pressure difference when the pressure is applied to the container by a pressurizing gas supply unit via an air hose having a first socket at an end portion of the air hose, comprising:

• a passage disposed at an upper portion of the container-and being capable of releasing an inner pressure of the container for applying a pressure to the inside of the container;
• a first pipe disposed in the passage and having a plug at an end portion of the first pipe, the plug being configured such that the first socket can be detachably connected to the plug, the plug and the first socket constituting a coupler structure;
• and
• a cap having a second pipe, a second socket, and a restricting member,
• the second pipe being filled with the restricting member and provided with the second socket at an end portion of the second pipe,
• the second socket being detachably connected, in a case where the first socket is detached from the plug, to the plug of the first pipe such that the second pipe connects to the first pipe, the plug and the second socket constituting the coupler structure, and
• the restricting member being configured to allow a gas to pass through the second pipe and restricting the molten metal to pass through the second pipe in a case where the container stores the molten metal and is transferred, the restricting member depriving the molten metal, when passing through the restricting member, of heat to solidify such that the solidified metal restricts a further flow of the molten metal.

A molten metal supplying container, including a container capable of storing a molten metal, and allowing the molten metal to flow between an inside and an outside of the container owing to a pressure difference when the pressure is applied to the container by a pressurizing gas supply unit via an air hose having a first socket at an end portion of the air hose, comprising:

• a first flow path communicating the inside and the outside of the container, and allowing the molten metal to flow therein;
• a pressure releasing pipe provided to an upper portion of the container and being capable of releasing an inner pressure of the container, for applying a pressure to the inside of the container;
• a plug provided to an end portion of the pressure releasing pipe, the plug being configured such that the first socket can be detachably connected to the plug, the plug and the first socket constituting a coupler structure;
• and
• a cap having a pipe, a second socket, and a restricting member,
• the pipe being filled with the restricting member and provided the second socket with at an end portion of the pipe,
• the second socket being detachably connected, in a case where the first socket is detached from the plug, to the plug of the pressure releasing pipe such that the pipe connects to the pressure releasing pipe, the plug and the second socket constituting the coupler structure, and
• the restricting member being configured to allow a gas to pass through the pipe and restricting the molten metal to pass through the pipe in a case where the container stores the molten metal and is transferred, the restricting member depriving the molten metal, when passing through the restricting member, of heat to solidify such that the solidified metal restricts a further flow of the molten metal.

A safety cap of a container having a passage in which a first pipe having a plug at an end portion of the first pipe is disposed, at an upper portion, storing a molten metal, and being delivered from a first factory to a second factory, the passage being capable of releasing an inner pressure of the container and applying a pressure to an inside of the container via an air hose having a first socket at an end portion of the air hose detachably connected to the plug, the plug and the first socket constituting a coupler structure, comprising:

• a second pipe filled with a restricting member;
• a second socket provided to an end portion of the second pipe, the second socket being configured to be detachably connected, in a case where the first socket is detached from the plug, to the plug of the first pipe such that the second pipe connects to the first pipe, the plug and the second socket constituting the coupler structure;
• and
• a restricting member allowing a gas to pass through second the pipe and restricting the molten metal to pass through the second pipe, the restricting member depriving the molten metal, when passing through the restricting member, of heat to solidify such that the solidified metal restricts a further flow of the molten metal,
• wherein the second socket of the safety cap is detachably connected to the plug in a case where the container stores the molten metal and is transferred.