JPH0756353B2 - Connection structure between wall of assembled storage tank and piping - Google Patents

Description

The present invention relates to a connection structure for connecting a delivery water pipe through a wall surface of an assembled storage tank or various pipes that can be used as a water supply port of an underwater pump.

[Background technology and matters to be solved]

In recent years, many assembly storage tanks have been used in which a large number of unit panels are assembled to form side walls, bottom walls and the like. Most of these storage tanks are used in high-rise buildings, and a water receiving tank is installed in the basement and an elevated water tank is installed on the roof, and water once stored in the water receiving tank is guided to the elevated water tank by a pump or the like.

Therefore, a water pipe and a water pipe coming from a water pipe are connected to each storage tank, and in addition to this, a water drain pipe for draining water may be provided on the bottom wall. In particular, there are cases where the submersible pump has a water supply port for the submersible tank, and the connection between the submersible tank and each of these pipes becomes a problem.

That is, in the storage tank, as shown in FIG. 3, the flanges 2 of the unit panel 1 are sequentially connected to form each wall W. Although not shown, the connection W is generally for preventing water leakage. A sealant made of rubber or soft resin is sandwiched and connected by bolts and nuts (not shown). Similarly, although not shown, a sealant or packing material is also sandwiched between the openings 3 for connection with the respective pipes. Therefore, as a measure against this water leakage, it is desirable that the portion where these sealants are used is not much modified after the storage tank is assembled.

For example, if this attachment / detachment is repeated many times at the connection with the water supply pipe, the bolt and nut may be loosened or excessively tightened, and the packing may be damaged and water leakage may occur. In addition, even if water leakage does not occur from this connection portion, there are many points to be improved such as water leakage due to loosening of connection between other connection portions such as flanges. These drawbacks result from the direct modification of their connection in storage tanks where leakage protection is extremely careful.

In consideration of the above facts, an object of the present invention is to obtain a connection structure that does not cause water leakage even when connecting various pipes.

[Outline of Invention]

According to the present invention, in a connection structure of a pipe connected to an opening formed in a wall of an assembled storage tank, a bolt hole formed around the opening and a first water blocking member on both sides or at least one side of the wall. With a bolt inserted into the bolt hole from the inside of the wall, a first nut fastened to the bolt from the outside of the wall, and the first nut is housed and the bolt can be inserted. And a connecting flange provided at a connecting portion of the pipe, which is provided with a cave portion having a hole formed therein, and the bolt that penetrates the hole is screwed into the connecting flange so that the second water blocking member is interposed therebetween. Second, watertightly fixed to the wall
It is characterized by having a nut.

With this, according to the present invention, first, the bolt inserted into the bolt hole with the first water blocking member interposed therein is fixed to the wall with a waterproof function by screwing the first nut from the outside of the wall. Next, store the first nut in the cave part of the connecting flange,
The bolt penetrates through the hole, and the second water blocking member is interposed,
Watertightly attach the connecting flange to the wall. Where the second
Screw the nut of to the bolt and fix the connecting flange to the wall in a watertight state.

In this way, by forming the cave portion in the connecting flange,
The connection flange and the wall can be brought into close contact with each other without being interfered with by the first nut. Further, since the bolt and the connecting flange are fixed to the wall with separate nuts, the bolt is loosened by the attaching and detaching work of the connecting flange, and the first water blocking member is damaged, which deteriorates the waterproof function. There is no.

Example of Invention

FIG. 1 shows an example of connection with a water supply pipe, in which a plurality of bolt holes 4 are formed around the opening 3 of the side wall W of the storage tank. Then, the bolt 7 is inserted from the inside of the side wall W with the packing 5 and the washer 6 interposed. Then, the first nut 10 is screwed from the outside of the side wall W through the packing 8 and the washer 9 in the same manner. In this way, the bolt 7 is attached to the side wall W.
Is fixed, and the characteristic flange of the present invention is attached to this later.

Explaining this, the connecting flange 11 on the water pipe side has a cave portion 12 facing the first nut 10 and covering the entire first nut 10, and this cave portion 12 is provided with the bolt 7 described above. A play hole 13 is provided so that the tip projects.
When installing the connecting flange 11,
Insert the first nut 10 into the housing 12 and insert the bolt 7 through the play hole 13 so that the tip of the bolt 7 projects. After that, the second nut 16 is screwed through the packing 14 and the washer 15. Has become.

By loosening the second nut 16, the connecting flange 11 is attached and detached.

Due to the present invention having such a structure, the sidewall W of the storage tank is
The second nut without affecting the waterproof function applied to the
The flange 11 could be easily removed by simply loosening 16, and no water leakage occurred.

The bolt 7 penetrating the side wall W has improved waterproofness by the packings 5 and 8 inside and outside the side wall W, which is fastened by the first nut 10, but when the flange 11 is removed, the Since the work can be performed without loosening the nut 10, the situation in which the waterproof function deteriorates does not occur.

According to the conventional method, the first nut 10 is not used and the second nut is simply used.
Since the nut 16 is attached, it is unavoidable that the waterproof function of the side wall W is deteriorated when the flange 11 is removed. However, according to the present invention, the cave portion for accommodating the first nut 10 in the flange 11 is provided. The solution was achieved by forming 12.

The second embodiment shown in FIG. 2 is a view showing a case where the submersible pump (not shown) provided in the storage tank is used for a water supply port, which is different from FIG. 1 before mounting. It shows an overall view. In this case, a casing (not shown) of the submersible pump is integrally connected to the flange 11, and the casing is housed in the cylinder body 17 in the storage tank.

In this example, a cylindrical body 17 is arranged in a storage tank, and a flange 18 thereof has a play hole 19 through which a bolt penetrates. After abutting the mating flange 22 via the packings 20 and 21, the first nut 10 is screwed onto the bolt 7. Then puckkin
The flange 11 of the water supply port is tightened with the second nut 16 via 23. In this way the second nut 16
And the flange 11 is removed, an unillustrated submersible pump can be taken out as it is, and the waterproof function of the side wall W is not deteriorated as in the above-described embodiment.

〔The invention's effect〕

Since the present invention is configured as described above, it is possible to connect various pipes from the wall surface of the assembled storage tank without causing water leakage at all, and it is possible to use not only for water transmission and distribution pipes but also for mounting submersible pumps. Have the effect.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view showing a connection structure to which the present invention is applied, FIG. 2 is a cross-sectional view when a submersible pump is mounted, and FIG. 3 is a perspective view showing a general storage tank. is there. 1 ... Unit panel, 3 ... Opening, 7 ... Bolt, 10 ...
… First nut, 11 …… Flange for connection, 12 …… Cave part, 16 …… Second nut.

Claims (1)

[Claims] 1. A connection structure of a pipe connected to an opening formed in a wall of an assembled storage tank, wherein a bolt hole formed around the opening and a first stopper on both sides or at least one side of the wall. A bolt inserted into the bolt hole from the inside of the wall with a water member interposed therebetween, and a first nut tightened to the bolt from the outside of the wall,
A connection flange provided in a connecting portion of the pipe, which has a cave portion in which the hole for accommodating the first nut and through which the bolt can be inserted is formed, and the bolt which penetrates the hole are screwed together. A second nut for watertightly fixing the connecting flange to the wall with a second water blocking member interposed therebetween, and a connection structure between the wall of the assembled storage tank and the pipe.