JPH0124237Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention mainly consists of grease traps that have the function of accepting wastewater generated from industrial facilities such as restaurants and cafeterias, separating oil and fat using the difference in specific gravity, and then discharging the water. This invention relates to a type of grease trap that is placed in the upper and lower through holes of a concrete floor slab.

If the floor slab in which the grease trap is left penetrating is located in a fire protected area, the grease trap must be fire protected. The following methods are conventionally known as methods for fireproofing.

(a) After installing a grease trap at the site, attach lath to the outside surface of the grease trap and apply mortar.

(b) After installing a grease trap at the site, several steel plates are connected to surround the grease trap and fixed to the floor slab.

The above method (a) has the disadvantage that it not only takes a lot of time to apply the lath and apply mortar, but also takes a long time to cure the mortar. Furthermore, since mortar is relatively heavy, the thickness of the coating cannot be made very large, making it difficult to secure the desired two-hour fire resistance.

Furthermore, the above method (b) has the problem that the iron plate used is quite heavy and difficult to handle during construction, and the fire resistance tends to be insufficient.

In view of the above-mentioned circumstances, the present invention aims to improve fire resistance and construction workability.

To achieve the above object, the present invention is characterized by a fire-resistant grease trap in which the outside circumferential surface and the outside of the bottom surface of the grease trap main body are covered with fire-resistant molded plates, the grease trap main body being reinforced with fibers. The molded plate is constructed from a combination of lightweight and fire-resistant flat plate-like members such as calcium silicate plates, and each molded plate is made of plastic through a mounting member attached to the grease trap main body. The plate is connected to the grease trap body by bolts, and the mounting member is formed with a mounting surface for positioning each molded plate at a predetermined distance from the outer surface of the grease trap body. This configuration provides the following functions and effects.

The main body of the grease trap is made of fiber-reinforced plastic (FRP), which is extremely light with a specific gravity of a fraction of that of steel, and has excellent load-bearing and impact resistance.
In addition to using a lightweight molded plate such as a calcium silicate plate as the fireproof covering material, workability is significantly improved compared to the conventional grease trap made of heavy iron plate. It was done.

Not only is the grease trap main body and the molded plate used as a fireproof coating material lightweight, but
The molded plate is constructed by a combination of flat plate members, and the grease trap body is effectively used as a mounting structure for the molded plate, and the molded plate is bolted to the grease trap body via the mounting member attached to the grease trap body. Since it can be assembled by connecting, it does not require a lot of labor to form the fireproof sheathing material using cast-in-place concrete, which is the case with conventional methods. Even compared to the case of forming into a housing shape, the fireproof covering structure can be easily constructed using a simple flat formed plate that is easy to process.

In addition, although it is lightweight as mentioned above, the FRP grease trap body has low thermal conductivity, and the molded plate such as a calcium silicate plate that covers the outside of the grease trap body has fire resistance, In addition, since it is highly insulating, the entire grease trap has high fire resistance.

Furthermore, the mounting member for bolt connection is one in which the molded plate has a mounting surface for spacing a predetermined distance from the outer surface of the grease trap main body, and plays a role as a spacer. Fire resistance can be further improved by using heat insulation.

Embodiments of the present invention will be described below with reference to the drawings.

[First embodiment]...See Fig. 1 A rectangular parallelepiped-shaped grease trap body 1 made of FRP includes a strainer holding part 2, partition plate mounting parts 3, 4,
It includes a partition plate 5, a trap 6, and a flange portion 7 on the outer periphery of the upper end. 8 is a strainer set in a drop-in type, and 9 and 10 are partition plates set in a removable type. The space sandwiched between the partition plates 9 and 10 is a separation section 11 for separating oil and water.

Angle-shaped mounting members 12 and 13 are attached to the main body 1 at the lower side of the flange portion 7 and the lower end of the main body 1.
are joined.

Each of the four lightweight, fire-resistant molded plates 14 covering the outer circumferential surface of the main body 1 has its upper portion connected to a bolt 15 protruding from the upper angle-shaped mounting member 12.
It is inserted through and attached by fastening a long nut 16. The outflow portion of the trap 6 passes through one of these four molded plates 14. Adjacent molded plates 14, 14 are connected with adhesive.

A lightweight, fire-resistant molded plate 17 covering the outside of the bottom surface of the main body 1 is attached to a lower angle-shaped attachment member 13 with bolts and nuts 18. Further, this molded plate 17 is connected to each lower end surface of the four molded plates 14 by an adhesive 19 and a tapping screw 20.

As mentioned above, the angled mounting member 1
2 and 13, each of the molded plates 14, 14 is spaced apart from the outer surface of the grease trap body 1.
Attachment surfaces 12a and 13a for each of the molded plates 14 and 17 are formed such that the molded plates 17 are located at the same positions.

Four molded plates 14 on the circumference and molded plate 1 on the bottom
7 is made entirely of calcium silicate.
18' is a fire-resistant putty, which is used to make the bolts and nuts 18 fireproof.

In many cases, the structure up to the stage described above is manufactured at a factory. Then, it was delivered to the site, and Nagatatsu 1
Anchor bolts 21 are screwed into 6, and concrete is poured with the anchor bolts 21 supported by a concrete formwork to construct a floor slab 22. Mounting member 1
2. The bolts 15, long nuts 16 and anchor bolts 21 are embedded in the concrete floor slab 22, resulting in fireproof protection.

In the figure, 23 is a side gutter and 24 is a lid.

[Second Embodiment]...See Fig. 2 Of the mounting members 12 and 13 in the first embodiment, the upper angle-shaped mounting member 12 is replaced with a plate to which bolts 15 are welded, and this plate is made of FRP. It is fixed to the main body 1 by an FRP overlay 25.

The other configurations are the same as those in the first embodiment.

[Third Embodiment] See FIG. 3 The upper side of the upper angular mounting member 12 protrudes long and also serves as an anchor for the floor slab 22. That is, there is no anchor bolt 21 in the first embodiment, and instead of the long nut 16, an ordinary nut 26 is used.

Furthermore, a channel-shaped mounting member 13 is used in place of the lower angle-shaped mounting member 13 in the first embodiment.

The other configurations are the same as those in the first embodiment.

Note that although reference numerals are written in the claims section of the utility model registration for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by such entry.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a first embodiment, FIG. 2 is a partial sectional view showing a second embodiment, and FIG. 3 is a sectional view showing a third embodiment. 1... Grease trap body, 12, 13...
Mounting member, 12a, 13a...Mounting surface, 1
4,17...Lightweight, fire-resistant molded plate.

Claims (1)

[Scope of utility model registration request] In a fire-resistant grease trap in which the outer peripheral surface and outer bottom surface of the grease trap body 1 are covered with fire-resistant molded plates 14 and 17, the grease trap body 1 is made of fiber reinforced plastic (FRP).
In addition, the molded plates 14 and 17 are constructed by a combination of lightweight and fire-resistant flat members such as calcium silicate plates, and a mounting member 12 attached to the grease trap body 1,
The molded plates 14 and 17 are connected to the grease trap main body 1 by bolts via bolts 13, and the mounting members 12 and 13 have molded plates 14 and 17 spaced apart from each other by a predetermined distance from the outer surface of the grease trap main body 1. A fireproof grease trap characterized in that mounting surfaces 12a and 13a are formed for positioning plates 14 and 17.