JPH047648U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a sectional view of an embodiment of the material addition device for a vacuum melting furnace or the like according to the present invention, and Fig. 2 corresponds to a cross section taken along the bent line.
The figure is a - cross-sectional plan view of Figure 1, Figure 3 is a schematic diagram of a vacuum induction melting furnace equipped with a conventional material addition device,
FIG. 4 is a sectional view of a conventional continuous material addition device. Explanation of symbols, 1... Vacuum chamber, 2... Induction furnace, 3
...Material room, 3a...Storage room, 3b...Lid, 3
c...handle, 3e...floor, 3g...hole, 3h
... Arm, 3i ... Holding metal fitting, 4d ... Transfer cylinder, 4e ... Holding plate, 4f ... Pin, 4g ... Spring, 6 ... Vacuum valve, 6a ... Upper valve body, 6b ... Seat Surface, 6c... Valve body, 6d
...Void, 6e...O ring, 7...Dissolved material,
8...Duct.

Claims (1)

[Claims for Utility Model Registration] 1. A melting furnace disposed in a vacuum chamber, and a melting furnace arranged outside the vacuum chamber to be able to reduce the pressure to a vacuum state and communicated with the vacuum chamber through a valve in an airtight manner and covered inside. In a material addition device for a vacuum melting device or the like, which has a material chamber that accommodates a melting material and can supply the material to be melted into a vacuum chamber in a vacuum state, the material chamber has a side wall, a floor portion, a lid portion, and the like. a material chamber body disposed within the body to accommodate the material to be melted, and a circular orbit centered on the axis of the material chamber and including a point where an extension of the central axis of the valve intersects the floor portion; at least one storage chamber configured to be able to revolve around the storage chamber; and a transfer cylinder that receives the material to be melted from the storage chamber and transfers the material to the vacuum chamber through the valve, the storage chamber being able to revolve along the When the valves are aligned substantially coaxially above the material chamber, the valves are positioned approximately at the point where the extension of the central axis of the valve intersects the floor on the floor of the material chamber, and the valve is positioned below the storage chamber. A funnel is provided between the end face and the upper end face of the valve to receive the material to be melted from the storage chamber and transfer the material through the valve into the vacuum chamber, and after the transfer is completed, the storage chamber is further a transfer cylinder that, when revolved away from a position above the valve, returns upwardly from the valve chamber of the valve and further upwardly away from the floor of the material storage chamber to close the valve; Material addition equipment in vacuum melting furnaces etc. 2. The material addition device according to claim 1, wherein one end of the transfer tube is pivotally supported on the floor of the material chamber by a horizontal axis perpendicular to the circular orbit of the storage chamber, and the other end is a free end. The storage chamber is supported by a flat plate member and is always elastically pressed upward by a spring or the like, so as to be able to swing between the surface of the floor portion and a surface tilted upward from the surface, so that the storage chamber revolves. At this time, the material is pushed by the cylinder and swung downward against the elastic force and inserted into the valve chamber to transfer the material to be melted into the vacuum chamber, and after the transfer is completed, the storage chamber further revolves and the material is When you leave the position on the valve,
A material addition device for a vacuum melting furnace or the like, characterized in that the storage chamber is released from pressure by a spring or the like and returns to a position inclined upward from the floor of the material chamber. 3. The material addition device according to claim 1 or 2, wherein the storage chamber includes a plurality of storage cylinders, and these storage cylinders are arranged at approximately equal intervals on the same circumference of the floor of the material chamber and are connected by an arm. A material addition device for a vacuum melting furnace or the like, characterized in that the device is integrally connected to the material chamber and is rotated around the axis of the material chamber by a handle provided outside the material chamber.