JPH05228483A - Large combined treatment/purification tank - Google Patents

Abstract

PURPOSE:To make it possible to cut the number of operating steps significantly by covering the periphery of a flange part with a resin using RIM technology and connecting tank bodies with the flange part to obtain a treatment/ purification tank. CONSTITUTION:A contact part between a tank body 10-2 and a tank body 10-3 is formed into flanges 10-2a, 10-3a, and further, engagement grooves 10-2c, 10-3c for a partition plate are formed on the contact surface of the flange. At the same time, sealing material introduction grooves 10-2a, 10-3b are formed at the bottom of the engagement groove for a partition plate. In addition, a packing material 16 is introduced into the sealing material introduction groove of the flange, and at the same time, the flanges are fastened using a bolt 12 and a nut 13 after engaging the partition plate 14 with the engagement groove for a partition plate. Next, the periphery of the flange part is covered with a resin 15 using RIM technology to bind the tank body 10-2 to the tank body 10-3. Thus, the tank bodies are bound together using the flange part to obtain the object treatment/purification tank.

Description

Detailed Description of the Invention

[0001]

The present invention relates to a RIM (R eaction I njec
tion M olding: Reaction injection molding).

[0002]

2. Description of the Related Art Conventional large-scale combined treatment septic tanks are mainly made of FRP which uses glass fibers as a reinforcing material and is formed by laminating a mat or cloth of glass fibers with an unsaturated polyester resin. Is. However, FRP products use glass fibers as aggregates, so in the work of laminating these glass materials, fine powder of glass fibers may fly into the air, or glass fibers may get stuck in the body. There is a problem that is required. In addition, since FRP products have glass fibers as aggregates, there are many problems in their disposal, etc. Therefore, large-scale resin materials (for example, polyolefin resin, which is a compound of carbon and hydrogen) that can be easily disposed of newly There is a growing demand for combined treatment septic tanks.

Although production by RIM can be considered as an alternative to FRP, in order to produce a large combined treatment septic tank by RIM, it is necessary to finish injecting the solution into the molding frame before the solution is cured by reaction. , There are difficult molding problems. Further, in the case of a large size, there is a difficult problem in terms of strengthening the rigidity.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a large-scale combined treatment septic tank by RIM which is easy to manufacture and has high rigidity.

[0005]

In order to solve the above problems, the present invention is directed to contacting a plurality of tank bodies made of RIM molded products,
A large combined treatment septic tank having a structure in which the contact portion is fastened to form one treatment septic tank, wherein the contact portion of the tank body is formed on a flange, and a partition plate fitting groove is formed on the contact surface of the flange. At the same time, a seal material insertion groove is formed on the bottom surface of the partition plate fitting groove,
Insert the packing material into the tank and the tank into the sealing material insertion groove of the flange, fit the partition plate into the partition plate fitting groove, fasten the flanges together with bolts, and fix the outer circumference of the flange portion by RIM. It is characterized in that it is covered with a resin body and a plurality of tank bodies are fastened with flange portions to form a treatment septic tank.

[0006]

As described above, according to the present invention, since the large-scale combined treatment septic tank is composed of a plurality of tank bodies, each tank body and the side lid body are RI.
Since it can be easily manufactured by M, RIM
The large-scale combined treatment septic tank can be easily manufactured. Moreover, the assembly of a large-scale combined treatment septic tank is performed by applying the packing material to the groove for applying the sealing agent on the flange of the tank body, fitting the partition plate into the partition plate fitting groove, and fastening the flanges with bolts to form the RIM molding. Since a resin body is formed so as to cover the outer periphery of the flange part, multiple tank bodies are transported to the site,
A large-scale combined treatment septic tank can be easily assembled at the site. Since each tank body can be provided with flanges at both ends thereof and the thickness of the resin layer can be arbitrarily set, the tank body can have a high rigidity.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. 3A and 3B are views showing the structure of a large-scale combined treatment septic tank of the present invention. FIG. 3A is a plan view and FIG. 3B is a sectional view. As shown in the figure, the large-scale combined treatment septic tank 10 is composed of three tank bodies 10-1, 10-2, and 10-3, and side cover bodies are provided outside the tank bodies 10-1 and 10-3 at both ends thereof. 10
a and 10b are provided. Tank bodies 10-1, 10-
Manhole mounting frame 11- is provided on the upper part of 2, 10-3.
1, 11-2, 11-3 are provided.

The tank bodies 10-1, 10-2, 10-3 have flanges formed at both ends thereof, as will be described later.
The large combined treatment septic tank 10 is assembled by fastening the flanges to each other with bolts and nuts. Tank 10-
A partition plate 14 is interposed between 1 and 10-2 and between the tank bodies 10-2 and 10-3.

FIG. 1 shows the flange of the tank body 10-2 and the tank body 10.
It is sectional drawing which shows the detail of the fastening part {A part of FIG.3 (b)} of the flange of -3. As shown in FIG. 1, the tank body 10-2
And the tank body 10-3 are provided with flanges 10-2 at their ends.
a and a flange 10-3a are provided. Partition plate fitting grooves 10-2c and 10-3c, into which the ends of the partition plate 14 are fitted, are formed on the respective facing surfaces of the flanges 10-2a and 10-3a, and the partition plate fitting groove 10 is formed. -2
c and 10-3c each have a bottom surface provided with a sealing material insertion groove 1
0-2b and 10-3b are formed.

Flange 10-2a and flange 10-3a
Sealing material insertion groove 10-2b and sealing material insertion groove 10-3
Insert packing material 16 such as butyl rubber into b, fit the ends of partition plate 14 into partition plate fitting grooves 10-2c and 10-3c, and attach flanges 10-2a and 10-3a to bolts 12 and nuts 13. Then, the tank body 10-2 and the tank body 10-3 are temporarily fastened.

Flange 10-2a and flange 10-3a
After the bolt 12 and nut 13 are temporarily fastened, the flange 1
0-2a and the flange 10-3a on the outer periphery of the form,
A resin material is injected into the mold by the RIM method to form a resin body 15
To form. The resin body 15 has a strip shape and has a flange 10-2a.
And the outer circumference of the flange 10-3a. As a result, the tank body 10-2 and the tank body 10-3 are integrally connected. In addition,
Although illustration is omitted, fastening of the tank bodies 10-1 and 10-2 is performed in the same manner.

Further, FIG. 2 shows a fastening portion between the flange of the tank body 10-1 and the flange of the side lid body 10a {B portion of FIG. 3 (b)}.
3 is a cross-sectional view showing the details of FIG. Flange 1 of tank body 10-1
Sealing material insertion grooves 10-1b and 10ab are formed in the facing surfaces of the flange 0-1a of the side cover body 10a and 0-1a, respectively. Flange 10-1a and Flange 10aa
Sealing material insertion groove 10-1b and sealing material insertion groove 10ab
Insert the packing material 16 such as butyl rubber into the flange 1
0-1a and 10aa are temporarily fastened with the bolt 12 and the nut 13, and the tank body 10-1 and the side lid body 10a are temporarily fastened. After the temporary fastening, a mold is provided on the outer peripheral portions of the flanges 10-1a and 10aa, and a resin material is injected into the mold by the RIM method to form the resin body 15, which is the same as in the case of FIG. .

FIG. 4 shows the flange of the tank body 10-2 and the tank body 10.
It is sectional drawing which shows the detail of the other fastening part {A part of FIG.3 (b)} of the flange of -3. As shown in FIG. 4, the flange 10-2a and the flange 10-3a are provided by forming the ends of the tank body 10-2 and the tank body 10-3 in a substantially U-shaped cross section. A partition plate fitting groove 10-2c and a partition plate fitting groove 10-3c are formed on the opposite surfaces of the flange 10-2a and the flange 10-3a, respectively, and the sealing material insertion groove 10-2b and the seal are formed on the bottom surface thereof. A material insertion groove 10-3b is formed.

A packing material 16 such as butyl rubber is inserted into the sealing material insertion groove 10-2b and the sealing material insertion groove 10-3b, and the partition plate fitting groove 10-2c and the partition plate fitting groove 10-3c are inserted.
The end portion of the partition plate 14 is fitted to, and the flange 10-2a and the flange 10-3a are temporarily fastened with the bolt 12 and the nut 13. Flange 10-2a and flange 10-3 after temporary fastening
The resin body 15 is formed by the RIM method so as to surround a. Although not shown, tank bodies 10-1 and 10-2
Do the same for the combination of.

FIG. 5 is a sectional view showing the details of the fastening portion of the flange of the tank body 10-1 and the other flange of the side lid body 10a (B portion in FIG. 3B). The ends of the tank body 10-1 and the side lid body 10a are formed in a U-shaped cross section to form a flange 10-1.
a and a flange 10aa are formed, and the flange 10-1a
A seal material insertion groove 10ab and a seal material insertion groove 10-1b are formed on the surfaces of the flange 10aa that face each other. A packing material 16 such as butyl rubber is inserted into the seal material insertion groove 10ab and the seal material insertion groove 10-1b, and the flanges 10-1a and 10aa are temporarily fastened with a bolt 12 and a nut 13. After temporarily tightening, flange 10-1
a and 10aa are provided with a mold on the outer periphery thereof, and the RIM is placed inside the mold.
The point that the resin material is injected by the method to form the resin body 15 is as described above.

Tank bodies 10-1, 10-2, 10-3 and side lid bodies 10a, 1 constituting the large-scale combined treatment septic tank 10 described above.
0b is manufactured by the RIM method using a polyolefin resin composed of a compound of carbon and hydrogen. Tank bodies 10-1, 10-2, 10-3 manufactured in this way
And the side lids 10a and 10b are transported to the site, and the flanges of the tank body and the side lids are bolted 12 and nut 1 as described above.
3, and the resin body 15 is formed by the RIM method so as to wrap the outer periphery thereof, and the assembly of the large combined treatment septic tank 10 is completed. In addition, in the above-mentioned embodiment, an example in which the large-scale combined treatment septic tank is formed of three tank bodies has been described, but the number of the tank bodies is three.
Of course, it is not limited to individual pieces. Further, the side lid body may be integrally formed with the adjacent tank body.

[0017]

As described above, according to the present invention, the following excellent effects can be obtained. (1) Since the large combined treatment septic tank is manufactured by RIM (using a polyolefin resin made of a compound of carbon and hydrogen) instead of FRP, unlike FRP, when this large combined treatment septic tank is discarded due to its life etc. It becomes easy to dispose of.

(2) Since the treatment septic tank is divided into a plurality of tank bodies and side lids for manufacture, it is easy to transport and the work in the septic tank such as piping becomes easy.

(3) Compared with the conventional FRP product (specific gravity 1.7), a RIM molded product of polyolefin resin (specific gravity 1.
Since it is 04), the weight of the treatment septic tank can be reduced.

(4) Since the tank body and the side lid body can be integrally molded by RIM, unlike the conventional FRP molding, it is possible to greatly reduce the number of working steps.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing the details of a flange of a tank body and a fastening portion of the flange (A portion in FIG. 3B) that constitutes a large-scale combined treatment septic tank of the present invention.

[Fig. 2] A fastening portion between a flange of a tank body and a flange of a side lid body constituting a large-scale combined treatment septic tank of the present invention {B in Fig. 3 (b).
It is sectional drawing which shows the detail of a part}.

FIG. 3 is a diagram showing a large-scale combined treatment septic tank of the present invention.
3A is a plan view and FIG. 3B is a cross-sectional view.

FIG. 4 is a cross-sectional view showing the details of the flange of the tank body and the other fastening portion of the flange (A portion in FIG. 3B) that constitutes the large-scale combined treatment septic tank of the present invention.

[Fig. 5] Another fastening portion between the flange of the tank body and the flange of the side lid body that constitute the large-scale combined treatment septic tank of the present invention {Fig. 3 (b)
FIG. 4 is a cross-sectional view showing details of B portion of FIG.

[Explanation of symbols]

 10 Large-scale combined treatment septic tank 10-1,2,3 Tank body 10a, 10b Side lid body 10aa Flange 10-1a, 2a, 3a Flange 10-1b, 2b, 3b Seal material insertion groove 10-1c, 2c, 3c Partition plate Fitting groove 11-1, 2, 3 Manhole mounting frame 12 Bolt 13 Nut 14 Partition plate 15 Resin body 16 Packing material

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Kiyoshi Sakurai 4-2-1 Motofujisawa, Fujisawa City, Kanagawa Prefecture EBARA Research Institute

Claims (1)

[Claims] 1. A large combined treatment septic tank having a structure in which a plurality of tank bodies made of RIM molded products are brought into contact with each other and the corresponding contact portions are fastened to form one treatment septic tank, wherein the contact portion of the tank body is a flange. And a partition plate fitting groove is formed on the contact surface of the flange, and a sealing material insertion groove is formed on the bottom surface of the partition plate fitting groove. The packing material is inserted into the groove, the partition plate is fitted into the partition plate fitting groove, and the flanges are fastened together with bolts. Further, the outer periphery of the flange portion is covered with a resin body by the RIM method to form a plurality of tanks. A large combined treatment septic tank characterized in that a body is fastened at the flange portion to form a treatment septic tank.