JPH0516154Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a synthetic resin storage tank suitable for use as an industrial chemical storage tank, a waste liquid treatment tank, a charging tank, a mixing tank, etc.

(Prior art) Conventionally, as shown in Fig. 5, the liquid outlet of a relatively large synthetic resin storage tank is provided by a through hole C being formed through a predetermined portion near the lower end of the peripheral wall B of the main body A. The flange part (E) of the flanged fitting member (2) made of resin or metal is brought into contact with the inner surface of the circumferential wall part (B) made of synthetic resin with a packing hole interposed therebetween, and the fitting part (2) is inserted into the fitting member (2), and an interposed pipe is installed inside. It was fixed together with the socket using fitting nuts and holes, and the flange member was fixed to the socket, and the flange type valve was attached to the flange member via bolts and nuts, and piping was completed.

For this reason, liquid leakage may occur at the connecting portion between the flanged fitting member (2) and the through hole (C) of the circumferential wall (B), and at the connecting portions of the fitting member (2), the socket, and the flange member.

(Problems to be solved by the invention) In particular, the frequency of liquid leakage is high at the joint between the through hole C of the circumferential wall (B) and the fitting member (D). There was a problem in that it was difficult to maintain sufficient strength at the joint portion with the fitting member 2.

(Means for Solving the Problems) In the present invention, the liquid outlet of the circumferential wall of the synthetic resin storage tank is integrally molded when the circumferential wall of the synthetic resin storage tank is molded to prevent liquid leakage. A cylindrical protrusion extending in the direction, a flange extending annularly in a vertical plane and continuing from the end of the cylindrical protrusion, and a vertical annular peripheral wall extending continuously from the periphery of the flange. To provide a synthetic resin storage tank in which a liquid outlet is integrally molded with a peripheral wall part.

(Function) Since the liquid outlet consisting of the cylindrical projection, the flange, and the peripheral wall is integrally molded with the peripheral wall, liquid leakage does not occur in the boundary area between the peripheral wall and the cylindrical projection.

(Example) An example of the present invention will be described with reference to FIGS. 1 to 4.

As shown in FIGS. 1 and 2, a storage tank 1 made of synthetic resin such as polyethylene has a main body 5 formed by integrally molding a top 2, a circumferential wall 3, and a bottom 4.
has a cleaning port 6, a liquid introduction pipe attachment part 7, 7,
Ribs 8 are formed, and liquid outlets 9, 9, 9, 9 are integrally molded near the bottom 4 of the circumferential wall 3. Note that the reinforcing frame 10 may be attached by being wrapped around the upper circumferential wall portion 3 near the liquid outlets 9, 9.... The cleaning port 6 is covered with a removable lid 11.

As shown in FIGS. 3 and 4, the liquid outlet 9 includes a cylindrical protrusion 9a that extends outward continuously from the circumferential wall 3, and a cylindrical protrusion 9a that extends outward in a vertical plane and continues from the end of the cylindrical protrusion 9a. The synthetic resin storage tank 1 is composed of a flange portion 9b extending in an annular shape and a peripheral wall portion 9c extending continuously from the periphery of the flange portion 9b and exhibiting a vertical annular shape.
At the time of molding, the liquid outlets 9, 9, 9, 9 are integrally molded at the same time, and a mounting hole 9d is provided through the flange portion 9b.

Since the present invention is constructed as described above, there is no liquid leakage in the boundary area between the circumferential wall 3 and the liquid outlets 9, 9, 9, 9.

That is, the cylindrical protrusion 9a of the liquid outlet 9 is connected to the circumferential wall 3.
The flange part 9b is integrally molded and is integrally molded with the cylindrical protrusion part 9a, and the flange part 9b is integrally molded with the cylindrical protrusion part 9a.
The cylindrical protruding part 9a is reinforced by the peripheral wall part 9c continuously integrally molded on the flange part 9b to prevent deformation. The bolt 13 passed through the insertion hole 12b of the flange portion 12a is inserted into the packing 14.
It can be mounted by applying it from the inside, applying the presser plate 15 from the outside, and fixing it with the nut 16.

In addition, the liquid introduction pipe attachment part 8 formed on the top part 2 is
After drilling the mounting holes, piping for the liquid introduction pipe system can be immediately constructed.

Further, by wrapping the reinforcing frame 10 around the upper peripheral wall portion 3 near the liquid outlet 9, the liquid outlet 9 can be further reinforced.

(Effect of the invention) In this invention, the liquid outlet consisting of the cylindrical protrusion, the flange, and the peripheral wall is integrally molded when the peripheral wall is molded, so there is no liquid leakage in the boundary area between the peripheral wall and the liquid outlet. This has advantages such as being able to prevent danger and ensure work safety, as well as making it possible to easily, stably, and reliably mount the flange type valve.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional front view of the main parts of the synthetic resin storage tank of the present invention, Figure 2 is a plan view of the same, Figure 3 is an enlarged sectional view of the liquid outlet, and Figure 4 is the liquid outlet. FIG. 5, which is an enlarged front view of a portion, is a detailed explanatory diagram of a conventional liquid outlet. 2...Top part, 3...Perimeter wall part, 4...Bottom part, 5
...Main body, 6...Cleaning port, 7...Liquid introduction pipe attachment part, 9...Liquid outlet, 9a...Cylindrical protrusion, 9b...
...Flange portion, 9c...Peripheral wall portion, 9d...Mounting hole, 10...Reinforcement frame, 11...Lid, 12...Flanged valve.

Claims (1)

[Scope of utility model registration request] A cylindrical protrusion part that extends outward continuously from the circumferential wall, a flange part that continues to the end of the cylindrical protrusion part and extends annularly in a vertical plane, and a vertical annular part that extends continuously from the periphery of the flange part. A synthetic resin storage tank having a liquid outlet formed integrally with a circumferential wall and a circumferential wall exhibiting the same characteristics.