JP2969608B2 - Water cooling frame and sealing mechanism of operating port in aluminum melting furnace - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water cooling frame and a sealing mechanism for an operation port in an aluminum melting furnace. BACKGROUND ART Aluminum melting furnaces are used for melting aluminum ingots and aluminum scrap, and for compounding and refining alloys of molten aluminum. There are various types of the aluminum melting furnace, such as a stationary type, a tilting type, a circular furnace, a square furnace, and the like. All of these are used for inspecting the inside of the furnace, repairing, scraping out dross, etc. on the furnace wall. Has been established.

A water-cooling frame is mounted on the operating port, and an opening / closing door having a lifting means and a pressing means is provided. The operating port is sealed by bringing the opening / closing door into contact with the water-cooling frame. It is supposed to. The present invention relates to an improvement in a water cooling frame and a sealing mechanism of an operation port in the above aluminum melting furnace.

[0003]

2. Description of the Related Art Heretofore, as a water cooling frame of an operation port in an aluminum melting furnace, a water cooling frame having a water passage formed therein is fixedly mounted on a base frame around the operation port. . Further, as a sealing mechanism for such an operation port, an open / close door having a flat outer plate fixedly mounted on a door frame via a heat insulating material is used, and the flat outer plate of the open / close door is brought into contact with the water cooling frame. Are used.

However, the conventional water-cooling frame as described above is fixedly mounted on a base frame around an operation port, so that the flat outer plate of the opening and closing door comes into contact with the water-cooling frame. However, there is a drawback that it is easily deformed by mechanical impact or mechanical impact when scraping dross in the furnace. Further, in the conventional sealing mechanism as described above, since the flat outer plate of the opening / closing door is in so-called surface contact with the water cooling frame, the sealing performance is essentially poor, and the outer plate is fixed to the door frame. The outer plate is easily deformed by a mechanical impact when the outer plate comes into contact with the water-cooling frame, and these have a disadvantage that the sealing performance is further deteriorated in combination with the deformation of the water-cooling frame.

[0005]

The problem to be solved by the present invention is that the conventional water-cooling frame and the sealing mechanism tend to deform the water-cooling frame, and in particular, it is impossible to secure a stable sealing property for a long period of time. Is a point.

[0006]

SUMMARY OF THE INVENTION According to the present invention, a water cooling frame having a water passage formed therein is provided such that a foot extending from the water cooling frame has a margin to a base frame around an operation port. A water cooling frame for an operation port in an aluminum melting furnace characterized by being inserted into the base frame with a margin by being inserted and the foot piece being locked to the base frame by a stopper. .

Further, according to the present invention, the water cooling frame and the outer plate provided with the rounded portion are provided with a foot piece extending from a door frame having a heat insulating material interposed between the outer plate and the outer plate. An opening / closing door that is inserted into the board with a margin and the outer plate is locked to the foot piece with a stopper, thereby being fitted with a margin to the door frame,
The invention relates to a sealing mechanism for an operating port in an aluminum melting furnace, wherein a rounded portion of an outer plate of the opening / closing door is in close contact with the water cooling frame.

An important point in the water cooling frame according to the present invention is that
The point is that the water-cooling frame is mounted with sufficient margin on the base frame around the operation port. An important point in the seal mechanism according to the present invention is to use an opening / closing door in which an outer plate provided with a rounded portion is attached to the door frame with a margin, and bring the rounded portion into close contact with the water cooling frame. In the place.

[0009]

The leg extended from the water cooling frame is inserted into the base frame around the operation port with a margin. Since the margin has a buffer function on the water cooling frame, even if a mechanical shock is applied to the water cooling frame, the deformation can be prevented. Also, since the rounded portion of the outer plate of the opening / closing door is in so-called line contact with the water cooling frame, the sealing of the operating port is essentially good, and the foot extended from the door frame has sufficient room for the outer plate. It is inserted, and since the margin has a buffering function on the rounded portion of the outer plate, even if a mechanical shock is applied to the rounded portion, the deformation can be prevented, and eventually, the deformation of the water cooling frame can be prevented. The so-called line contact between the water-cooled frame and the rounded portion of the outer plate of the opening / closing door and the prevention of the deformation of the rounded portion allow the stable sealing of the operating port over a long period of time to be ensured.

[0010]

FIG. 1 is a partially enlarged longitudinal sectional view showing an embodiment of a water cooling frame according to the present invention when cut perpendicular to a furnace wall, and FIG. 2 is the same when cut parallel to a furnace wall. FIG. 2 is a partially enlarged longitudinal sectional view showing one embodiment. The water cooling frame 11 is placed on a base frame 21 around an operation port of an aluminum melting furnace (not shown). A water passage 12 is formed inside the water cooling frame 11, and a foot 13 extends from the bottom of the water cooling frame 11. An opening 22 is opened in the base frame 21, and the foot piece 13 is inserted through the opening 22. A hollow portion 14 is formed in the foot piece 13, and a stopper 15 is pivotally supported by the hollow portion 14 so as to be able to fall, and the foot piece 13 is locked to the base frame 21 by the fallen stopper 15. .

The inner diameter of the opening 22 is larger than the outer diameter of the foot 13, and a margin is set between the opening 22 and the foot 13. The water-cooling frame 11 is mounted with a margin on a base frame 21 around an operation opening (not shown).

FIG. 3 is a longitudinal sectional view showing one embodiment of the sealing mechanism according to the present invention when cut perpendicularly to the furnace wall. In FIG. 3, on the left side, the water-cooling frame 11 as described in FIG.
11a is provided with an opening / closing door 31 having a known raising / lowering means and pressing means (not shown) on the right side.
1, 11a are mounted on the base frames 21 and 21a around the operation port 10 with a margin, and are rounded to the water-cooled frames 11 and 11a.
Are in line contact. In FIG. 4 which is a partially enlarged view of FIG. 3, a heat insulating material 61 is interposed between the outer plate 41 and the door frame 51. A rounded portion 42 is formed on the periphery of the outer plate 41, and an opening 43 is opened at the bottom of the outer plate 41. A foot piece 52 extends from the bottom of the door frame 51,
The foot piece 52 is inserted through the opening 43. A stopper 53 is fitted into the foot 52, and the outer plate 41 is locked to the foot 52 by a pin 53.

The inside diameter of the opening 43 is larger than the outside diameter of the foot 52, and a margin is set between the opening 43 and the foot 52. The outer plate 41 is mounted on the door frame 51 of the opening / closing door 31 with a margin.

The lifting means and the pressing means (not shown)
When the door 31 is lowered and pressed against the water cooling frame 11, the rounded portion 42 of the outer plate 41 makes a so-called line contact with the water cooling frame 11,
The mechanical shock at this time is absorbed by the allowance given to the water cooling frame 11 and the allowance given to the outer plate 41, and as a result, a long-term stable sealing property of the operation port can be secured.

[0015]

As is apparent from the above description, the present invention described above prevents the water-cooling frame mounted on the base frame around the operation port of the aluminum melting furnace from being deformed by mechanical shock, There is an effect that stable sealing properties can be secured for a long period of time.

[Brief description of the drawings]

FIG. 1 is a partially enlarged longitudinal sectional view showing one embodiment of a water cooling frame according to the present invention when cut perpendicularly to a furnace wall.

FIG. 2 is a partially enlarged longitudinal sectional view showing the same embodiment as FIG. 1 when cut in parallel with a furnace wall.

FIG. 3 is a longitudinal sectional view showing one embodiment of a sealing mechanism according to the present invention when cut perpendicularly to a furnace wall.

FIG. 4 is a partially enlarged view of FIG. 3;

[Explanation of symbols]

11 ... water cooling frame, 12 ... water passage, 13, 52 ...
・ Legs, 15, 53 ・ ・ ・ Stoppers, 21 ・ ・ ・ Base frame, 2
2, 43 ... opening, 31 ... opening and closing door, 41 ...
Outer plate, 42: Round processing part, 51: Door frame

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ identification code FI F27D 7/06 F27D 7/06 B (58) Field surveyed (Int.Cl. ⁶ , DB name) F27B 3/00-3 / 28 F27D 1/00 F27D 7/06 C22B 9/16 C22B 21/00-21/06

Claims (2)

(57) [Claims] 1. A water cooling frame having a water passage formed therein, a foot piece extending from the water cooling frame is inserted into a base frame around an operation port with a margin, and the foot piece is stopped. A water cooling frame for an operating port in an aluminum melting furnace, wherein the water cooling frame is attached to the base frame with a margin by being locked to the base frame. 2. A water cooling frame according to claim 1, and an outer plate provided with a rounded portion, wherein a foot extending from a door frame interposed with a heat insulating material is provided between the outer plate and the outer plate. By being inserted into the board with a margin and being locked to the foot piece with a stopper,
An opening / closing door fitted with a margin to the door frame, wherein the rounded portion of the outer plate of the opening / closing door of the opening / closing door is brought into close contact with the water cooling frame; Seal mechanism.