JP2604100B2 - Inner cylinder removal device from NaS battery - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for extracting an inner cylinder from a NaS battery used for disassembling a used NaS battery.

[0002]

2. Description of the Related Art A NaS battery is a chargeable / dischargeable battery filled with sodium inside a solid electrolyte tube and sulfur outside, and has attracted attention as a battery for power storage because of its ability to store a large amount of power. ing. However, since the life of this battery is considered to be about 10 years, it is expected that a large amount of used NaS batteries will be generated in the future. However, the processing technology of NaS batteries has not been established so far, and much less equipment for it has not been developed. Therefore, there is no prior art about the present invention.

[0003] The present inventors are currently developing a technology for treating used NaS batteries, but in the treatment of NaS batteries, while recovering sodium and sulfur that can be reused from the inside, and having a multiple structure. It has been found necessary to extract the metal inner cylinder containing sodium from the outer cylinder (solid electrolyte tube).

However, both the outer cylinder and the inner cylinder have an elongated shape, and sodium or sulfur exists between them, so that the core of the outer cylinder and the inner cylinder is slightly shifted or inclined. It is impossible to remove the inner cylinder, especially if you want to use a robot to automatically perform the dismantling process, simply mechanically align the core of the outer cylinder chuck and the inner cylinder chuck. Then, it turned out that there were cases where the inner cylinder could not be removed properly.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems and to provide an apparatus for extracting an inner cylinder from a NaS battery capable of smoothly extracting the inner cylinder from an outer cylinder of the NaS battery by an automatic machine. It is an object of the present invention to provide a device capable of smoothly extracting the inner cylinder even when the cores of the outer cylinder and the inner cylinder of the NaS battery are misaligned.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides an NaS battery inner cylinder having an upper surface open and a lower surface provided below an outer cylinder chuck for holding an NaS battery outer cylinder. An outer cylinder holding cylinder having a slightly larger circular hole is fixed, and an inner cylinder chuck for extracting the inner cylinder is provided below the outer cylinder holding cylinder.

[0007]

In order to remove the inner cylinder by the inner cylinder extracting device from the NaS battery of the present invention, first, the outer cylinder of the NaS battery whose head has been cut in advance is held in an inverted state by the outer cylinder chuck, and the lower position thereof is set. Insert into the outer cylinder holding cylinder fixed to. Next, the inner cylinder chuck is inserted and opened from a circular hole slightly larger than the inner cylinder of the NaS battery formed on the lower surface of the outer cylinder holding cylinder, and the inner cylinder is held from the inside. At this time, since the NaS battery is slidably held inside the outer cylinder holding cylinder, even if the outer cylinder and the inner cylinder are misaligned or inclined, the NaS battery is automatically moved by the inner cylinder chuck. Centered on Therefore, if the inner tube chuck is lowered, the inner tube can be smoothly removed from the outer tube. NaS
Extraction of the inner cylinder from the battery is performed in a bath of molten paraffin or the like to prevent contact between sodium and air. Hereinafter, the present invention will be described in more detail with reference to the illustrated embodiments.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, reference numeral 1 denotes a used NaS battery, and first and second inner cylinders 2 for storing sodium and an outer cylinder 3 are shown. Although the storage container is further outside in the use state, it is assumed that the head is cut off and the storage container is removed in advance in the previous process, and then supplied to the apparatus in an inverted state. Reference numeral 4 denotes an openable / closable outer tube chuck for holding the outer tube 3 of the NaS battery 1, and the whole is supported by a lower end of a lifting shaft 5.

Reference numeral 6 denotes an outer cylinder holding cylinder fixed at a position below the outer cylinder chuck 4. The outer cylinder holding cylinder 6 is slightly larger than the outer cylinder 3 of the NaS battery 1, and its upper surface is open and a circular hole 7 is formed on the lower surface. This circular hole 7
It has an inner diameter slightly larger than the inner cylinder 2 of the NaS battery 1.
The upper end surface 8 of the outer cylinder holding tube 6 is curled outward so that the NaS battery 1 can be easily inserted by the outer tube chuck 4.

Reference numeral 9 denotes an inner cylinder chuck for removing the inner cylinder provided coaxially below the outer cylinder holding cylinder 6. The entire inner cylinder chuck 9 is moved up and down on the same axis as the outer cylinder holding cylinder 6 by the upper and lower cylinders 10 above the bearings, and the inner cylinder chuck 9 is held in the outer cylinder 3 of the NaS battery 1 held by the outer cylinder holding cylinder 6. 2 can be withdrawn downward.

According to the apparatus of the present invention thus configured,
In order to remove the inner cylinder 2 from the outer cylinder 3 of the NaS battery 1, first, the outer cylinder 3 of the NaS battery 1 whose head has been cut in advance is held in an inverted state by the outer cylinder chuck 4, and then the outer cylinder 3 is removed as shown in FIG. It is inserted inside the tube holding tube 6. At this time, the outer cylinder 3 of the NaS battery 1 is held on the bottom and wall surfaces of the outer cylinder holding cylinder 6. Next, the inner cylinder chuck 9 is inserted through the circular hole 7 of the outer cylinder holding cylinder 6 into the NaS battery 1.
And the inner cylinder 2 is chucked from the inside. At this time, since the NaS battery 1 is slidably supported inside the outer cylinder holding cylinder 6, even if the cores of the outer cylinder 3 and the inner cylinder 2 are slightly displaced, the NaS battery 1 can be used. The inner cylinder 2 can be slid in any direction, and the inner cylinder 2 can be smoothly removed from the outer cylinder 3 by lowering the inner cylinder chuck 9 as shown in FIG.

The apparatus of the present invention does not require the inner cylinder chuck 9 to be slid in the horizontal direction, and has the advantage of simplifying a mechanism that requires immersion in a bath of molten paraffin or the like. The outer tube chuck 4 only needs to insert the NaS battery 1 into the outer tube holding tube 6, and when the inner tube is pulled out, the NaS battery 1 is separated from the outer tube chuck 4. There is also an advantage that a precise alignment is not required.

[0013]

As described above, the apparatus for extracting the inner cylinder from the NaS battery according to the present invention has the outer cylinder of the NaS battery on the lower surface.
Since the outer cylinder of the S battery is also held by the outer cylinder holding cylinder with a slightly larger circular hole, the inner cylinder is pulled out,
Even when there is some misalignment between the outer cylinder and the inner cylinder, or when the inner cylinder is slightly inclined with respect to the outer cylinder, there is an advantage that the inner cylinder can be smoothly removed by the automatic machine. Further, the apparatus for removing an inner cylinder from a NaS battery according to the present invention does not require the inner cylinder chuck to be slid in the horizontal direction, so that there is an advantage that the lower mechanism that needs to be immersed in the bath can be simplified.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view showing an embodiment of the present invention.

FIG. 2 is a partially cutaway front view showing a state in which the inner cylinder is being pulled out.

[Explanation of symbols]

 1 NaS battery 2 Inner tube 3 Outer tube 4 Outer tube chuck 6 Outer tube holding tube 9 Inner tube chuck

Claims (1)

(57) [Claims] An outer cylinder holding cylinder having an open upper surface and having a circular hole slightly larger than an inner cylinder of a NaS battery is fixed to a lower position of an outer cylinder chuck for holding an outer cylinder of a NaS battery. An inner cylinder extracting device from a NaS battery, wherein an inner cylinder chuck for extracting the inner cylinder is provided below.