JPS622064Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a foam stock solution tank used in foam fire extinguishing equipment, and particularly relates to improvements in a partition membrane that expands with pressurized water and its mounting structure in order to send the foam stock solution out of the tank.

Conventionally, as this type of foam stock solution tank, one having the structure shown in FIG. 1, for example, is known. In Fig. 1, reference numeral 1 denotes a tank body made of steel, and a small diameter pressurized water inlet 3 and an outlet 4 are provided at the upper and lower ends of the tank body 1, and an outlet 5 for delivering foam concentrate is provided in the body. , 6, 7, an injection port 8 for the foam stock solution, and an air vent hole 9, respectively. 2 is a rubber partition membrane, whose both ends are connected to the flange portions 3A, 4 of the pressurized water inlet 3 and outlet 4 of the tank body 1.
It is fixed by tightening the flange lids 3B and 4B to A.

In such a foam stock tank, the foam stock solution is stored under pressure between the tank body 1 and the rubber partition membrane 2, and the pressurized water inlet 3 and outlet 4 are normally closed by a release valve (not shown). and outlet 5,
The pipes connected to 6 and 7 are filled with water or an aqueous foam solution, and there is no movement of the foam stock solution inside. However, if a fire breaks out and a fire detector etc. is activated,
The release valve opens, the fire pump starts, pressurized water flows in from the pressurized water inlet 3, the rubber diaphragm 2 expands, and the foam concentrate is pushed out from the discharge ports 5, 6, and 7, as shown in the figure. The water and foam stock solution are mixed by a foam mixer that does not contain water, and are released into the air from the foam knob to form fire extinguishing foam that can be used to extinguish fires.

Next, details of the rubber partition membrane 2 will be explained using FIGS. 2 and 3. In the figure, the rubber partition membrane 2 is formed in the shape of a spindle-shaped bag, and uses a sheet in which a reinforcing cloth such as nylon is laminated on the surface of a rubber sheet. In order to form the rubber partition membrane 2 into a bag shape, bonding parts 2A, 2B, and 2C are provided.
At the upper and lower ends of the rubber partition membrane 2, bonding parts 2D, 2E, 2 are provided for attachment to the above-mentioned flange part 3A.
F and 2G are provided. By the way, the above-mentioned bonding parts 2A to 2G are bonded together using an adhesive or the like, but the bonding work at an angular part like the bonding part 2D is done by taking out part A in FIG. 3. As shown in the figure, one sheet must be bent at nearly 90 degrees while being pulled together while pasting, making the pasting process difficult and time-consuming, as well as stress concentration, which reduces the strength of the work. There is also a problem that it becomes weak. In addition, since the foam concentrate has strong permeability, there is a problem in that the foam concentrate leaks out of the tank from the bonded area through the nylon cloth laminated with the rubber sheet to the part where the partition membrane 2 is tightened by the flange portion 3A and the flange lid 3B. There is.

The present invention was developed by focusing on the above-mentioned problems.In order to facilitate the bonding work of the rubber partition membrane and to reliably prevent leakage of the raw solution, the inside of the pressurized water inlet and outlet of the tank body is The purpose of the present invention is to solve the above-mentioned problems by providing a flange integrally at the position where the diameter increases in the body of the flange, and by splitting an opening of the rubber partition membrane into the flange and fixing it with the flange member. .

Hereinafter, the present invention will be explained based on the drawings.

FIG. 4 is a diagram showing an embodiment of the present invention,
The same parts as in FIG. 1 are represented by the same reference numerals.

First, the configuration will be described. A flange portion 13 for attaching a rubber partition membrane 11 is integrally provided at a position where the diameter of the pressurized water inlet 3 which is provided in the upper part of the tank body 1 is expanded to the body. This flange part 1
The same applies to the pressurized water outlet 4 at the lower end of the tank body 1.

The flange portion 13 has a plurality of bolt through holes 13a on its circumference, and a split flange member 12 having the same shape is screwed inside, and there are no holes between the flange portion 13 and the split flange member 12. The rubber partition membrane 11 is mounted inside the tank body 1 by clamping the opening of the rubber partition membrane 11 through a packing 14. The other configurations are the same as the conventional device shown in FIG.

FIG. 5A shows the rubber partition membrane 1 used in the above embodiment.
1 is taken out and shown, the rubber sheet that will become the body and the rubber sheets that will become the upper and lower parts are cut out, and these rubber sheets are pasted together to form parts 11A and 1.
1B and 11C are bonded together to form a bag shape, and only three sheets need to be cut out in a predetermined shape for bonding, and the bonded portion 11
Since A, 11B, and 11C are all superimposed on flat parts, bonding is easy and work time can be shortened.

An opening is provided in the center of the upper and lower ends of the rubber partition membrane 11, and when installing it to the tank body,
Gaskets 14 are interposed from both sides to provide sealing during tightening. This packing 14 is attached to the rubber partition membrane 11 as shown in FIG. 5B.
A plurality of bolt holes 15 are provided at positions inside the opening.

To attach the rubber partition membrane 11 configured in this way to the tank body 1, open the hatch 10, insert the rubber partition membrane 11 through this opening, and cut it into the rubber partition membrane 11 through the opening at its upper end. The flange member 12 may be inserted and fixed to the flange portion 13 via the packing 14 using bolts, and the lower part of the rubber partition membrane 11 may be fixed in the same manner. According to such an attachment structure of the rubber partition membrane 11, the rubber partition membrane 11
Since each of the cut ends of the opening at the end is immersed in the pressurized water inlet 3 or outlet 4 filled with pressurized water, the pressures of both the water and the foam concentrate are the same; There is no leakage of foam concentrate.

As explained above, according to the present invention, each of the openings at the upper and lower ends of the rubber partition membrane is sandwiched between the flange part provided on the tank body and the split flange member, so that the foam stock solution flows into the tank. Since leakage to the outside can be completely prevented and the number of places where the rubber partition membrane is pasted is reduced, the pasting work becomes extremely efficient.

[Brief description of the drawings]

Figures 1 to 3 are diagrams showing a conventional tank. Figure 1 is an overall view, Figure 2 is a diagram showing details of a rubber diaphragm, and Figure 3 is a diagram showing a bonded part. be. Figures 4 and 5 are diagrams showing an embodiment of the present invention; Figure 4 is an overall view, Figure 5B is a detailed view of the plate, and Figure 5A is a rubber diaphragm. figure. 1... Main body, 2, 11... Rubber partition membrane, 3, 4
... Pressurized water inlet, 5, 6, 7 ... Outlet, 3
A, 4A...flange part, 3B, 4B...flange lid, 8...inlet, 9...drain port, 10...
...Hatch, 12...Split flange member, 13...
Flange, 14...Packskin, 13a, 15...
Hold through hole, 2A~2G, 11A~11C...
...Gluing part.

Claims (1)

[Scope of Claim for Utility Model Registration] A tank body that has small-diameter pressurized water inlets and outlets at the upper and lower ends and a discharge port in the body, and a tank body that is integrally provided at a position where the diameter of the pressurized water inlet and outlet increases in the body of the tank body. a bag-shaped partition membrane having openings facing the pressurized water inlet/outlet at both ends thereof, and the opening of the partition membrane being clamped between the flange portion of the tank main body, so that the partition membrane is A fire extinguishing foam stock solution tank, comprising a split flange member mounted inside the tank body, and configured to send pressurized water from the pressurized water inlet/outlet to expand the partition membrane and discharge the foam stock solution from the tank body.