JPS59203134A - Production of treating tank - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention is for sedimentation separation of domestic wastewater, industrial wastewater, etc.

The present invention relates to a method of manufacturing a processing tank used for processing such as filtration, decolorization, and removal of harmful substances.

BACKGROUND OF THE INVENTION Conventionally, for example, a treatment tank α as shown in FIG. 1 has been used to purify domestic wastewater discharged from a household dining room or the like. In Fig. 1, (1) is a tank body having an opening (1) A at the top, an inlet (2) and an outlet (3) on the side, and partition plates (4), (5). ) to form a flow path inside the tank body (1) from the inlet to the outlet.1. A filtration chamber (6), a precipitate separation filtration chamber (7), and a precipitate separation chamber (8) are provided, and the filtration chamber (6) has a filtration capacity (
6) A is arranged, and a filter net material (7) is placed in the sediment separation filtration chamber (7).
Stretch A. In this way, the wastewater flows from the inlet (2) to the tank body (
1) and is first filtered in the 1 filtration chamber (6).
(6) Roughly filtered by A, then flowed into the sediment separation filtration chamber (7) from the communication port (4) A at the bottom of the partition plate (4), finely filtered by the filter net material (7) A, and separated by sediment. After that, it flows into the sedimentation separation chamber (8) from the communication port (5)A in the middle part of the partition plate (5), where it is subjected to sedimentation separation, and the thus purified wastewater is discharged from the outlet (3).

The above treatment tank is made of concrete, glass fiber reinforced plastic (FRP), etc., and is manufactured by methods such as molding, hand lay-up, and press molding, but the above method has a large handicraft element and is not suitable for mass production. .

The present invention aims to improve the above-mentioned conventional drawbacks and provide a method for manufacturing a treatment tank that can be easily mass-produced, and the main point of the present invention is to apply expansion molding to the manufacture of the treatment tank.

The invention will be explained in detail below.

Examples of the treatment tank of the present invention include polyvinyl chloride, styrene-butadiene copolymer, styrene-butadiene block copolymer, acrylonitrile-butadiene-styrene copolymer, and polyethylene.

The material is thermoplastic synthetic resin such as polypropylene or ethylene-propylene copolymer.

The manufacturing process of the present invention consists of the following four manufacturing steps.

1. Step of inserting a hollow body made of thermoplastic synthetic resin into an expansion mold in a heated and softened state. 2. Perform expansion molding by pressurizing air into the hollow body, and create an opening at the top Step 2.3 of manufacturing a container with a bottom, the partition plate is installed in the container by rolling and inserting the partition plate from the opening of the container, and the partition plate creates a flow path from the inflow side to the outflow side. Steps 3-4 of forming and steps 4-4 of connecting the inlet and outlet to the container will be described below with reference to an embodiment shown in FIGS. 2 and below.

Step 1. As shown in Fig. 2, the body molding part (1
) A, and the opening molded portion (
(to) Insert the tubular body c2η made of the thermoplastic synthetic resin into a heated and softened state into the expansion mold (to) having B, and fit the stopper clηA into one end of the tubular body I21),
The other end is closed by a chuck C31)'B. Stopper Gυ
A is connected to the air entrance 0.

Step 2. As shown in Fig. 3, pressurized air is injected into the heated and softened tubular body QD from the pneumatic inlet connected to the plug GυA, and the tubular body Q'D is expanded to form the opening. αl)A and body α1)c are formed to obtain a container (b) as shown in FIG.

Step 3. In this case, a partition plate is installed inside the container (9), and the partition plate forms a flow path from the inflow side to the outflow side, and the partition plate 0→, αG is the opening α of the container α°C]
) Roll up and insert as shown in Figure 5 from A. container αυ
diameter 2r1. Diameter 2r2 of opening (11)A. Partition plate α4
The length d of one stroke is shown in FIG. 6 and has the following relationship. In the figure, from the center of the container αυ′ to the partition plate α →, a
The distance to υ is l and d=2Fatsur (2) In order to round and insert the partition plate α→, αQ of length d from the opening α〃A, 2πr2 > d (8) Equation (2) According to equation (3), 2 yr r 2 > 27 (4) Therefore, π2 r22 > r+2-12 (5) That is, the radius of the container rye and the radius of the opening r2. The attachment position 11 of the partition plate, that is, the length d of the partition plate, needs to satisfy the condition shown in equation (5) when the cross-sectional shape of the container is a perfect circle. In the general case where the cross-sectional shape of the container is not a perfect circle, design is performed based on equation (3). In this case, d is equal to the length of the container. There are various ways to temporarily install the partition, but for example, as shown in Figure 7, double γ curved portions (nl) are installed on both sides of the container a1).
, (+++), and the double curve (m).

Groove (m)A formed in (■), partition plate α in (m)A
→.

There is a method of fitting and supporting both edges of the OQ, or a method of forming single curved portions (+12) and (+12) as shown in FIG. 8 and bonding both edges of the partition plate 0IO9αω to the side surfaces thereof. Note that the double curved portion and the single curved portion can be formed at the same time when the container αη is bulged.

Step 4. In this case, as shown in FIG. 9, an inlet (a) and an outlet α] are connected to the container αυ.

In this way, a configuration is obtained in which the interior of the container α is divided into three compartments by the partition plates α and α9, and as shown in FIG. A filtration chamber αη and a sedimentation separation chamber (to) are provided, a filter bag αQA connected to the inlet (6) is arranged in the filtration chamber α frame, and a filter net material ◇ηA is stretched over the sedimentation m filtration chamber 0η. In the above steps, steps 3 and 4 may be performed simultaneously or either may be performed first.

In the treatment tank (1), the wastewater 1 to be treated, such as domestic wastewater, which has flowed into the container αη from the inlet (6) is filtered into the filtration chamber 0.
At Q, coarse filtration is performed by filter bags 0 and A, and the partition plate Q
41 It flows into the sediment separation filtration chamber 0η from the communication port Q4) A at the bottom, is filtered by the filter net material θηA and is separated by precipitation, and then flows into the sediment separation chamber α barrel from the communication port aυA in the middle part of the partition plate 09. It is precipitated and separated and discharged from the outlet 03.

FIG. 11 and FIG. 12 show another embodiment, in which Step 1. The tubular body Qη inserted into the expansion mold in
As shown in FIG. 11, the other end is closed with a bottom cover α1)B made of the same synthetic resin material instead of the chuck 61)H. The bottom cover α])B is fitted and supported by the support stopper (31)'B. Thus, step 2. 12th in
As shown in the figure, the bottom cover (11) is formed by expanding the tubular body Qp.
Obtain a container a°C with B.

The present invention manufactures a container with a bottom by blow-molding a tubular body made of thermoplastic synthetic resin in a blow-forming mold in a heated and softened state, and inserts a rounded partition plate into the opening of the tube. Since it is installed inside the container, the manufacturing process is extremely simple and shortened. In addition, with bulge molding, the diameter of the opening of the container is usually smaller than the diameter of the body, so the manpole can also be made with a small diameter, so it does not take up much space after being buried, improving area efficiency, and also improves appearance. This is desirable because a shoulder is formed between the body and the opening, which acts as a resistance and reduces earth pressure (
(Preventing the treatment tank from floating due to

In addition, according to bulge molding, the shoulder portion can be formed so as to be sloped low toward the outer periphery, so that with a container having such a shape, the space portion p+ is lower than the surface of the water to be treated that fills the container. Small 9 volumetric efficiency is improved.

The processing tank obtained by the production method of the present invention contains filter media such as filter bags and filter net materials, as well as activated carbon and diatomaceous earth.

The ion exchange resin 9 is filled with charcoal and the like and is used for various wastewater treatments such as filtration, deodorization, decolorization, and removal of harmful heavy metals.

[Brief explanation of drawings]

Fig. 1 is a side sectional view showing a conventional example of a processing tank, Figs. 2 to 11 show the manufacturing process of the processing tank of the present invention, and Fig. 2 is a side sectional view showing process 1. , FIG. 3 is a side sectional view showing step 2, FIG. 4 is a side sectional view of the container obtained in step 2, FIG. 5 is a side sectional view showing step 3, and FIG. 7 is a cross-sectional view showing an example of the part where the partition plate is installed in step 3,
@Figure 8 is a sectional view showing another example of the partition plate installation part in step 3, Figure 9 is a side sectional view showing step 4, and Figure 10
The figures are side sectional views of one embodiment of the finished product, Figures 11 and 1.
2 shows another embodiment, FIG. 11 is a side sectional view showing step 1, and FIG. 12 is a side sectional view showing step 2. In the figure, αυ... Container, α1) A... Opening, (
b)... Inlet, α1... Outlet, 04. αQ
...Partition plate, fence...Processing tank Patent applicant Aron Kasei Co., Ltd. Kaya 1 Fig. 2 2 Fig. O 3 Mouth 1 6 Same 1 ''Ii8 Fig. 1 Yoshi 9 Fig. O 11 Fig. Valve 12 Fig.

Claims (1)

[Claims] Step 1: Inserting a hollow body made of thermoplastic synthetic resin into an expansion mold in a heated and softened state; pressurized air is injected into the hollow body to perform expansion molding, and an opening is formed at the top. Step 2 of manufacturing a bottomed container having a section 2゜ A partition plate is installed in the container by rolling and inserting the partition plate from the opening of the container, and the partition plate creates a flow path from the inflow side to the outflow side. A method for producing a treatment tank, comprising steps 1, 2.3.4, including step 3 of forming, step 4 of connecting an inlet and an outlet to the container.