JPH0159514B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a ceiling furnace wall of an incinerator or general industrial furnace, and particularly relates to a method of constructing a ceiling furnace wall when there is no ceiling casing. .

(Prior Art) FIG. 2 shows a conventional method of constructing a ceiling furnace wall without a ceiling casing. First, a plurality of anchors 2 are hung vertically from a ceiling beam 1, and a formwork 3 is assembled along the lower ends of the anchors. The formwork 3 is supported from the floor by square timbers 4, support square timbers 5, wedges 6, and the like. A refractory castable 7 is poured into the formwork 3 from above and hardened to form a refractory layer, and then a heat insulating castable, a heat insulating material, etc. (not shown) are poured or painted onto the upper surface of the mold to form a heat insulating layer.

Moreover, FIG. 3 shows the case of a plastic fireproof wall, in which a plurality of tile anchors 12 are suspended from a ceiling beam 11, and a solid formwork consisting of an upper frame 13a and a lower frame 13b is assembled. Here, the hanging fittings 15, square timbers 14, 16, etc. are used to connect the ceiling beam 11 to the lower frame 13.
hanging b. A plastic refractory material 17 is cast between the upper frame and the lower frame of this form to form a fireproof layer. Next, after removing the upper frame 13a, a heat insulating castable or heat insulating material (not shown) is placed on the fireproof layer. It was constructed to form a heat insulating layer.

(Problems to be Solved by the Invention) Recently, the spraying method has become popular, and the development of sprayed materials has made significant progress, and sprayed plastic fireproofing materials have also been developed. However, when applying this spraying method to a furnace without a ceiling casing, a sturdy frame board, etc. is required in place of the ceiling casing, and the frame board also has approximately 300
~400m/m It is necessary to drill holes or cut out the parts through which the hanging fittings and hanger tiles (tile anchors) installed at pitches will pass, which requires a lot of time and money for the framework and installation work. I had the problem of needing it.

The present invention solves the above-mentioned problems and provides a method for constructing a ceiling furnace wall that can be easily constructed by spraying without a ceiling casing and without constructing a solid formwork in place of the ceiling casing. It is something.

(Means for Solving the Problems) The present invention comprises a process of vertically installing a plurality of anchors on a fixed object such as a ceiling beam, a process of extending a wire mesh so that the anchors penetrate, and a process of extending a wire mesh downwardly to the wire mesh. The method consists of two steps: forming a heat insulating layer of a predetermined thickness by spraying a heat insulating material or heat insulating material, and laminating a refractory layer of the required thickness by spraying a refractory material on the lower surface of the heat insulating layer.

(Function) According to the above method, a wire mesh is easily attached to a predetermined position on the ceiling, a heat insulating layer of a predetermined thickness is formed by spraying without blowing the wire mesh or material from the mesh, and The ceiling furnace wall can be constructed by spraying a refractory layer on the lower surface, shortening the construction period and reducing costs.

(Example) Hereinafter, an example will be described in detail with reference to the drawings. FIG. 1 shows an embodiment of the present invention. Reference numeral 11 indicates a ceiling beam, and a plurality of tile anchors 12 are vertically installed on the ceiling beam 11 at predetermined intervals. Next, the wire mesh 21 is stretched so that the tile anchors 12 pass through it. As this wire mesh,
For example, metal lath or the like may be used, and the opening may be about 5 to 7 m/m. The hole through which the tile anchor passes can be easily drilled. A heat insulating material or a heat insulating material is sprayed from below toward the wire mesh 21 stretched in this manner, and is deposited to a predetermined thickness to form a heat insulating layer 22. Insulating materials and heat insulating materials have low specific gravity, so they can be sprayed without blowing away the wire mesh by simply installing a stop plate.

Generally, when there is a ceiling casing, if you spray the insulation or heat insulating material from below, there is a tendency for the material to bounce around near the corners due to the sharp swirls and turbulence of the blown air, resulting in more rebound loss. If a net is used, the blown air will first blow upwards even at the corners, so the blown material will stick to the mesh instead of scattering. In addition, at the beginning of spraying, the material passes through the mesh together with the air for only a moment, so the amount is not noticeable at all, and it does not scatter and become dust to pollute the environment.

After depositing a predetermined thickness of heat insulating material on the wire mesh 21 and curing it, spraying plastic or castable is sprayed on the lower surface without a mold to form a fireproof layer 23.

As can be seen from the above embodiments, no formwork is used to construct the ceiling furnace wall, and the heat insulating layer 22 and the refractory layer 23 can be formed by spraying only by stretching the wire mesh 21.

(Effects of the Invention) As explained above, according to the present invention, a ceiling furnace wall can be constructed in a short period of time and at low cost without a ceiling casing and without constructing a solid formwork in place of the ceiling casing. Can be done.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a ceiling furnace wall according to an embodiment of the present invention, and FIGS. 2 and 3 are diagrams showing a conventional method of constructing a ceiling furnace wall. 11...Ceiling beam, 12...Tile anchor, 21...
Wire mesh, 22...insulating layer, 23...fireproof layer.

Claims (1)

[Claims] 1. A process of hanging multiple anchors on a fixed object such as a ceiling beam, a process of stretching a wire mesh so that the anchors pass through it, and a process of spraying heat insulating material or heat insulating material onto the wire mesh from below to obtain the required thickness. A method for constructing a ceiling furnace wall without a casing, comprising the steps of: forming a heat insulating layer; and laminating a refractory layer of a required thickness by spraying a refractory material on the lower surface of the heat insulating layer.