JP2584709B2 - Installation method and installation structure of fireproof grease interceptor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a grease interceptor suspended below the upper surface of a slab of a building. The present invention relates to an installation method and an installation structure of a fire-resistant grease interceptor which is configured as a fire-resistant case formed with a fire-resistant flange or a fire-resistant seat, is inserted into the slab opening as it is, and is fitted and fixed to the slab.

[0002]

2. Description of the Related Art Conventionally, a grease interceptor for concentrating wastewater from a kitchen at one place to separate / remove residues and oil components in the wastewater has been provided below the floor according to the position of the kitchen in the building. Is suspended in a buried state.

[0003] Buildings are subject to the Building Standards Act to prevent the spread of fire in the event of a fire. When the installation state of the grease interceptor is adopted, the building is restricted by the provisions of the same law for fire prevention compartments. It is required to have a fire-resistant structure, a heat-insulating property and strength.

In such a grease interceptor, the outer wall is made of a refractory material and the inner wall is made of FRP, and a heat insulating material is filled between the double walls to thereby provide heat insulation and heat treatment for the treatment tank.
There was one that considered fire resistance. (Tokuhei 2-4496
(See No. 7)

In this known wastewater treatment tank, a heat insulating material is provided on the outer periphery of a processing tank body having an outwardly projecting flange on the upper part, and an outer wall is further provided on the outer periphery of the heat insulating material to form a three-layer structure before installation. At the same time, a flange is also formed on the upper peripheral edge of the outer wall, which is fixed to the flange of the treatment tank main body to form an integral double-walled fire-resistant structure, thereby contributing to the effect of preventing fire spread and workability. (About this construction,
(See No. 14)

[0006]

In addition to the above-mentioned known examples, various types of grease interceptors have been provided, and various installation methods have been implemented.
At the stage of actual construction at an industrial site, there are technical problems that cannot be adopted as they are.

For example, as to the means or method for fixing a fireproof case to a slab, as shown in the above-mentioned known example, a fireproof material (such as mortar) is provided between the opening of the slab and the drainage treatment tank.
In order to fill the slab, concrete panels (hereinafter referred to as control panels) must be attached to the lower surface of the slab (from the floor down to the ceiling). In addition, the filling of the gap requires a backfilling process, and in this respect, labor saving in construction has been difficult.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and solves the above-mentioned problems. A fire-resistant case is directly inserted into a slab opening having a step and formed on the lower surface of a flange of the fire-resistant case. Engagement means (fireproof flange or fireproof seat)
It is an object of the present invention to provide an installation method and an installation structure of a fire-resistant grease interceptor which is fitted and fixed to a slab via a slab.

[0009]

In order to achieve the above object, the installation method of the present invention relates to a procedure for installing a fire-resistant grease interceptor. An engaging means (fireproof flange or fireproof seat) is formed on the lower surface of the flange of the fireproof case, the fireproof case is inserted as it is into the slab opening, and the slab is inserted through the engaging means (fireproof flange or fireproof seat). It is characterized by being fitted and fixed.

[0010] In the installation structure of the present invention, the fireproof case has a fireproof flange formed on the lower surface of the flange, and the slab opening is formed of the fireproof case. A large opening rim opened to the upper side of the floor with an opening diameter substantially equal to the flange portion, a small opening rim opened to the lower side of the floor with an opening diameter substantially equal to the outer periphery of the fireproof case, and a step portion between the large and small opening rims. A fire-resistant case is fitted and fixed to the slab via the fire-resistant collar received by the part.

In some cases, a fireproof seat is provided on the lower surface of the flange of the fireproof case instead of the fireproof flange, and the fireproof seat is received by the step of the slab.

[0012]

[Function] A fire-resistant case is inserted into a slab opening having a step as it is, fitted and fixed to a slab through a fire-resistant flange or a fire-resistant seat formed on a lower surface of a flange, and buried below a slab upper surface. Hanged on. Further, by interposing the fireproof flange or the fireproof seat, heat insulation can be satisfied when the installation is completed.

[0013]

An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a partially enlarged cross-sectional view illustrating a method of installing a fire-resistant grease interceptor embodying an embodiment of the present invention and an installation structure thereof.

Here, 1 is a fireproof case, 1a is a treatment tank main body, 1b is a flange (part), 1c is a fireproof coating, 2 is a fireproof flange,
3 is a slab, 3a is a peripheral edge of a large opening, 3b is a peripheral edge of a small opening, and 3c is a stepped portion.

A fireproof case (1) is provided on the outer surface of the treatment tank main body (1a) with a heat insulating layer and / or a fireproof layer (1c) comprising a fireproof layer covering the entire circumference from the lower surface of the flange (1b) to the peripheral wall and the bottom wall. It is comprised as what has.

Here, the processing tank body (1a) is made of a heat-resistant material. Generally, an FRP material is preferably used. May be used. The heat-insulating layer may be a heat-insulating material such as rock wool, and the refractory layer may be a known material such as a calcium silicate plate. Alumina or silica may be applied to these materials as appropriate.

At this time, in the present invention, it is important to form a fire-resistant flange (2) by applying a fire-resistant coating (1c) on the lower surface of the flange (1b) of the processing tank body (1a), and at the same time, when the installation is completed, It is characterized by ensuring thermal properties and simplifying the installation procedure.

On the other hand, the opening of the slab (3) has an opening diameter substantially equal to that of the flange portion (1b) of the fireproof case (1). Small opening rim opening to the bottom of the floor with the same opening diameter (3b)
And a step (3c) between the peripheral edges of the large and small openings.

Then, the fireproof case (1) is directly inserted into the opening of the slab (3) from above, the flange (1b) of the fireproof case (1) is aligned with the upper surface of the slab, and the fireproof flange (2) is inserted. Into the step (3c) of the slab (3),
It is fitted and fixed to the periphery of the large and small openings (3a, 3b).

The flange portion (1) of the fireproof case (1)
In b), a fireproof seat (22) may be provided instead of the fireproof flange (2). In this case, the fireproof case before insertion (1)
Is formed and fixed to the upper peripheral edge of the processing tank main body and the outer wall, respectively, and has an inner and outer double wall, and a heat insulating material is filled between the walls to form an integrated double wall structure. This is for application. This example is shown in a partially enlarged sectional view of FIG. Note that the same reference numerals are given to members common to the above embodiment.

[0021]

According to the present invention, the refractory case is inserted into the slab opening as it is and fitted and fixed between the slab and the backfill process. Is unnecessary, and it can be expected to be used as a labor-saving method of simple construction.

Further, when viewed as an installation structure, the effect of satisfying the heat shielding property is achieved by interposing a fireproof flange or a fireproof seat formed on the flange portion of the fireproof case.

[Brief description of the drawings]

FIG. 1 is a partially enlarged cross-sectional view illustrating an installation method and an installation structure of a fire-resistant grease interceptor embodying an embodiment of the present invention.

FIG. 2 is a similar partial enlarged sectional view of another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fireproof case 1a Treatment tank main body 1b Flange part 1c Fireproof cover 2 Fireproof flange (engaging means) 3 Slab 3a Large opening rim 3b Small opening rim 3c Step 22 Fireproof seat (engaging means)

Claims (4)

(57) [Claims] A fireproof case is formed by applying a fireproof coating to an outer surface of a processing tank body having a flange on an upper outer peripheral edge, an opening is opened in a slab of a building, and the fireproof case of the fireproof case is opened from above in the opening. In the method of installing a fire-resistant grease interceptor that inserts and arranges the flange so that it is aligned with the upper surface of the slab, supports the load, and suspends the grease interceptor below the upper surface of the slab in a buried state, the slab opening has large and small opening margins and steps. And the engaging means is formed on the lower surface of the flange of the fireproof case before insertion, the fireproof case is inserted into the slab opening as it is, and fitted and fixed to the slab via the engaging means. How to install a fire-resistant grease interceptor. 2. The method according to claim 1, wherein said engaging means is a fireproof flange or a fireproof seat. 3. An opening in the slab of the building,
Before insertion, a refractory case configured by applying a refractory coating to the outer surface of the treatment tank body having a flange on the upper outer peripheral edge, and the refractory case is inserted into the slab opening from above so that the flange portion of the refractory case is aligned with the upper surface of the slab. In the installation structure of the fire-resistant grease interceptor having a load supporting means arranged and suspended below the upper surface of the slab in a buried state, the fire-resistant case has a fire-resistant flange formed on the lower surface of the flange, and the slab opening is fire-resistant. A large opening rim opened above the floor with an opening diameter substantially equal to the flange portion of the case, a small opening rim opened below the floor with an opening diameter substantially equal to the outer periphery of the fireproof case, and a step between the large and small opening rims, An installation structure for a fireproof type grease interceptor, wherein a fireproof case is fitted and fixed to the slab via the fireproof flange received at the step portion. 4. The grease interceptor according to claim 3, wherein a fireproof seat is provided on a lower surface of the flange of the fireproof case in place of the fireproof flange, and the fireproof seat is received on a step portion of the slab. Installation structure.