JPS6041517Y2 - Hanging device for setting graphite crucible in furnace - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a hanging device for setting a graphite crucible in a crucible furnace or an iron pot installed in the furnace.

Recently, for the purpose of saving fuel, furnaces have been designed in which the gap between the furnace wall and the crucible is extremely narrowed in order to increase thermal efficiency. Similarly, efforts are being made to narrow the gap as much as possible.

This gap is typically about 5TIr! It is about rL.

If the gap between the furnace wall or the iron pot and the crucible is narrow, it is not possible to use conventional hanging devices such as crucible scissors or toggles, and it usually takes several people to hold the rim of the crucible. Either by hanging the crucible, or by passing a rope around the outer surface of the crucible to create a hanging part at the top, and hooking the winch hook to this part, the crucible can be hung, but in the former case, the crucible can be hung by a rope of more than 100kp. Some large graphite crucibles require a lot of work,
Furthermore, there is a risk that the crucible may fall and be damaged during hanging, which poses many safety problems.

In addition, in the latter method of hanging ropes, the gap between the furnace wall and the crucible cannot be narrowed due to restrictions such as the thickness of the rope and its knots, and since the rope has a circular cross section, the ropes cannot be hung on the outer circumference of the crucible. , the contact area between the crucible and the crucible is small, making it slippery, and there is also a risk of stress concentrating on the contact area at the mouth edge of the crucible, causing damage to that area.
In order to prevent this, if a patch cloth or the like is interposed between the crucible and the crucible, the diameter becomes even thicker, which has the disadvantage of making it difficult to set it in the furnace.

This invention was made to solve the above-mentioned conventional problems, and is made of woven polypropylene resin fibers with a thickness of approximately 2 rra.
An appropriate number of bands 2 having an appropriate width of n or less are passed along the outer peripheral surface of the graphite crucible 1 in the vertical direction to form a hanging part 3 at the top, so that the crucible 1 can be suspended from the hanging part 3. It is an object of the present invention to provide a hanging device for setting a graphite crucible in a furnace, which is characterized by the following features.

A hook 4 of a winch may be hung on this hanging portion 3 as shown in the figure, or an appropriate number of similar bands of appropriate lengths may be passed through the hanging portion 3 and tied. It may also be suspended through the wire.

The ends of the band 2 passed through the crucible 1 can be tied together, or can be joined by sewing or the like.

The thickness of the band 2 is made thin, approximately 2wn or less, and an appropriate width (approximately 35 to 100 rrrm) is selected depending on the weight of the crucible 1.

Since the thickness is reduced, the band 2 must have sufficient tensile strength to suspend a crucible weighing 100 kg or more.

For this reason, after researching various materials, it was found that a band made of woven polypropylene resin fibers was the most suitable.

This polypropylene resin band is widely used as a packaging material and is therefore extremely easy to obtain.

The hanging device of the present invention has the above-described structure, and since the thickness of the band 2 is approximately 2 mm or less, it is possible to narrow the gap between the furnace wall and the crucible to a minimum of 2 rran.

In this case, the position where the band 2 is polymerized is arranged to avoid the maximum outer diameter portion of the graphite crucible.

In addition, since the band 2 has an appropriate width and is made of a woven fabric, it has an appropriate frictional resistance and is difficult to slip, and there is no risk of the crucible slipping or falling during hanging as with the above-mentioned rope hanging. It's safe.

In addition, since the contact area between the crucible and the crucible is large, when suspended,
There is no risk of stress concentrating on the edge of the crucible mouth and causing damage to this part, as in the case of hanging with a rope.

In addition, it is extremely easy to attach the band 2 to the crucible because it is just a thin band 2 of an appropriate width. It can also be packaged, and in this case, even at the site of use, it can be immediately set in the furnace using the hanging part 3, so it can significantly improve work efficiency. It is a device.

Next, details of the present invention will be explained with reference to the illustrated embodiments.

Example 1 Figure 1 shows this example, in which a polypropylene resin woven band made by Showa Seibag Co., Ltd. with a thickness of about 2 cylinders and a width of about 7077F was attached to the outer peripheral surface of a graphite crucible 1 with a weight of 230 kg and an outer diameter of 840 Wn. 2. Pass the (product name: varnish line band) vertically across 8 or 4 bands as shown in the figure, form a hanging part 3 at the top, and attach a winch hook to this hanging part 3. 4 was hung and set in a hanging iron pot.

The gap between the iron pot and crucible is about 5rrr! It was possible to set the crucible without any trouble with sufficient margin.

In this case, the band 2 is left in the iron pot, but since the material of the band 2 does not generate harmful gases, it can be burned in the furnace as it is.

The gap was filled with scaly graphite and the product could be used as is.

If there is a sufficient gap between the iron pot and the iron pot, it is also possible to apply a cloth or the like between the crucible mouth edge and the band 2.

If this device is installed as part of packaging at a manufacturing factory as described above, it can be used as is after intercoloring at the site of use, and it can also be easily installed at the site of use when setting a crucible.

Example 2 Figure 2 shows this example, and the weight is 230k as in the upper part.
g. Graphite crucible 1 with an outer diameter of about 840 mm is passed with 8 or 4 vertical bands 2 (thickness about 2 mm, width about 70 mrri) similar to the upper side, and horizontal bands 5° 5'. Concatenated 6.

The connecting portion 6 was connected by sewing.

The horizontal bands 5, 5' are wound around the body of the crucible 1, and the band 5 is located close to the bottom of the crucible 1, preferably the band 5' is provided above.

Both are locations where the outside diameter is small below the upper edge of the crucible with the maximum outside diameter, and the outside diameter of the overlapping portion of the vertical and horizontal bands is within the maximum outside diameter of the crucible plus the thickness of the vertical band 2. ,
The vertical band 2 does not extend to the bottom of the crucible 1, but extends to the horizontal band 5, so that the crucible 1 can be supported by the horizontal bands 5, 5'.

A nylon coupling band 7 (
0.5 mm in thickness and approximately 1 mm in width were joined together, and they were tied together 8 with three half-bow knots, and their ends 9 were extended so that they could be pulled out of the furnace.

This crucible 1 was hung by hooking the hook 4 of the winch to the hanging part 3, and set on the crucible stand of the crucible furnace having the same gap as the upper side, and after setting, it was pulled out of the furnace by the coupling band 7. The end 9 was pulled to untie the joint 8, and the band 2 was pulled up and removed.

This hanging band 2, 5.5' could be reused.

To connect the ends of the horizontal bands 5, 5', in addition to the upper side, a magic fastener or other locking tool having a locking release means that can be operated outside the furnace, such as a drawstring, may be used.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view showing one embodiment of the present invention, and FIG. 2 is a front view showing another embodiment of the present invention. 1...graphite crucible, 2,5.5'...band, 3...hanging part, 7...coupling band.

Claims (2)

[Scope of utility model registration request] (1) Approximately 2r thick made of woven polypropylene resin fibers
A suitable number of bands 2, 2... having an appropriate width of rrm or less are passed along the outer peripheral surface of the graphite crucible 1 in the vertical direction to form a hanging part 3 at the upper part, and the crucible 1 is suspended by the hanging part 3. A hanging device for setting a graphite crucible in a furnace, characterized in that it can be hung. (2) Request for registration of a utility model in which the bands 2, 2... are connected 6 by a horizontal band 5 wrapped around the body of the graphite crucible 1, and the ends of the horizontal band 5 are releasably connected 8. A hanging device for setting a graphite crucible in a furnace according to item 1.