JP2005226432A - Drain confluent single pipe - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drain confluent single pipe capable of adjusting the connection height of a horizontally laying pipe, having a large flow rate of the horizontally laying pipe, and capable of laying the pipe in response to the story height. <P>SOLUTION: This drain confluent single pipe is constituted so that the horizontally laying pipe and a branch pipe are connected by a flange; a bolt hole is formed into an elongate hole; the branch pipe is connected to the single pipe by dislocating the center line from the center of the single pipe; and its flow passage cross-sectional area is formed larger than the inner diameter area of the horizontally laying pipe. The upper connection of the single pipe uses a bayonet joint, and the lower connection uses a flange type joint. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention belongs to a drainage pipe of an existing apartment house.

In the drainage pipes of old apartment houses, the drainage of the upper floor (for example, the drainage of the bath) is laterally piped (hereinafter referred to as the horizontal pipe) on the ceiling of the lower floor, and a screw-type drainage pipe joint is installed on the vertical drainage pipe. It is piped by the method of combining and using a vent pipe separately. When such a drain pipe needs to be repaired, the same piping method could not satisfy the requirement of being cheap even in a short time.

For such refurbishment, a single pipe type without ventilation pipes (a system in which drainage swirls and flows along the inner wall of the vertical drainage pipe and vents in the center of the pipe) is suitable. There was no convenient drainage merging single pipe that could be repaired only on a certain floor in accordance with the variation of the height of the horizontal pipe and the height of the floor.

In addition, there was a problem in using single pipe element technology for this renovation. Although FIG. 7 is an example of Non-Patent Document 1, since the horizontal pipe is connected to the branch pipe 3 and installed on the slabs 14 and 14 ', there is no function of adjusting the height of the horizontal pipe. For this reason, horizontal pipes behind the ceiling that require adjustment cannot be used. Further, since the branch pipe 3 is attached toward the center of the single pipe 2, when the flow rate from the horizontal drawing pipe is large, ventilation may be hindered or noise may be generated. It was estimated that noise would be a serious problem if drainage was spilled by other people behind the scenes.

Non-Patent Document 1 and Patent Document 2 are available as pipe connection structures that can be used for renovation, and the structure is shown in the center of FIG. The lower end of the straight pipe 12 is a flare flange joint 11 (same as the lower end portion of FIG. 6), and the upper end is an insertion flare flange joint C that can be connected even if the single pipe 2 moves up and down. The insertion flare flange joint C seals the gasket 26 fitted on the outer periphery of the single pipe 2 with a bolt (not shown) via a clamp 27. The straight pipe 12 is attached by tilting the straight pipe 12 and inserting the receiving port 9 into the lower end of the single pipe 2 from the diagonal direction to the innermost position, and keeping the straight pipe 12 in the inserted state (A in FIG. 6). Then, it is lowered and settled on the flare flange joint 11 (B in FIG. 6), and finally the clamp 27 is tightened to complete. In this way, since the straight pipe 12 is attached to the end of the pipe, it can be used for refurbishing only one floor when the horizontal pipe is on the slab. However, if the horizontal pipe is behind the ceiling and the upper connection is in the holes of the slabs 14 and 14 ', the clamp 27 can be placed in the slab hole even if the straight pipe 12 is extended to a length that allows connection. Tightening is not easy. In addition, there is no connection port for the horizontal pipe, and even if it is compared, the above-mentioned problem 0004 occurs. As a result, this cannot be used for this application.

There is Patent Document 2 in which the flow of the branch pipe is removed from the center of the joint so as to ensure the ventilation of the confluence and cause a swirling flow in the drainage. Because it is used, it is not a structure that can be connected according to the variation of the horizontal draw pipe height.
Kowa Industrial Co., Ltd. KOWA KJ Fitting Catalog 2003 JP-A-9-41645 JP 2001-26957 A

To obtain a drainage confluence single pipe that can adjust the connection height of the horizontal pipe. Obtain a drainage confluence single pipe with adjustable horizontal draw pipe connection height and large horizontal draw pipe flow rate. To obtain a drainage confluence single pipe that can be adjusted to the height of the floor while the connection height of the horizontal pipe can be adjusted.

The connection between the horizontal pipe and the branch pipe is a flange, and the bolt hole is a long hole. The branch pipe is connected to the single pipe by removing the center line from the center of the single pipe, and the flow path cross-sectional area is made larger than the inner diameter area of the horizontal pipe. The upper connection of the single pipe is a plug-in joint, and the lower connection is a flange-type joint.

Can easily cope with variations in horizontal pipe height and floor height, and it is possible to repair only one floor or parallel repairs on each floor, so that not only piping can be done in a short time, but also the overall cost can be reduced. . Moreover, even if there is much drainage, piping with few noises can be performed.

BEST MODE FOR CARRYING OUT THE INVENTION

The present invention will be described with reference to FIGS. FIG. 1 shows a piping example of the drainage merging single pipe of the present invention. The drainage merging single pipe 1 is composed of a single pipe 2, a branch pipe 3, and a branch pipe flange 4. The horizontal pipe 5 on the back of the ceiling is a branch pipe flange 4, a gasket 6, and a horizontal pipe flange 7 are bolts 8 (center). The connection is made by tightening the wire only.

There is a receiving port 9 at the upper end of the single pipe 2, and a drainage joint 10 on the upper floor is inserted and connected. The receiving port 9 has a structure that can be connected even if the insertion amount changes within a certain range due to the floor height (details will be described later).

The lower end of the single pipe 2 is connected to a straight pipe 12 by a flare flange joint 11, and the straight pipe 12 is connected to a drainage joint 13. The drainage merging single pipe 1 is supported by a slab 14 via a straight pipe 12 and a drainage joint 13. Further, from this, the upper surface of the slab 14 becomes a reference for height.

The relationship between the single pipe 2, the branch pipe 3, and the horizontal draw pipe 5 will be described with reference to FIGS. FIG. 2 is a view of a branch pipe portion as viewed from AA of FIG. The branch pipe 3 is attached at a position where the center line 15 passes outside the center O of the single pipe 2, and the inner surface 16 of the branch pipe 3 is inside the range not to be outside the inner face 17 of the single pipe 2. In short, the branch pipe 3 is attached so that the inflowing drainage swirls in the straight pipe 2.

As shown in FIG. 1, the branch pipe 3 has a downward slope, so that drainage flows more easily. However, when the inflow amount of drainage is small, the branch pipe 3 does not have to be sloped.

The orientation of the branch pipe flange 4 is determined according to the horizontal draw pipe flange 7, and the horizontal draw pipe flange 7 is attached to the center line 18 of the horizontal draw pipe 5 at a right angle. Therefore, as seen from AA in FIG. 1, when the center line 15 of the branch pipe 3 and the center line 18 of the horizontal pipe 5 coincide with each other, the result is as shown in FIG. 2, and when there is an angle, the result is as shown in FIG. When there is an angle, it is general that the center line 18 of the horizontal pipe 4 is attached so as to face the center O of the single pipe 2 as shown in FIG.

FIG. 4 shows the branch pipe flange 4 of FIG. 2 as viewed from the direction B of FIG. The inner surface 19 of the branch pipe flange 4 has a shape of a line where the surface 16 of the branch pipe 3 intersects the back surface of the branch pipe flange. The inner surface 19 is an ellipse because the branch pipe 3 is a circular cross section and has a downward slope.
The shape matches the inner surface 16 of the branch pipe 3. Reference numeral 20 denotes a bolt hole.

FIG. 5 shows the horizontal draw pipe flange 7 viewed from the direction B in FIG. In the horizontal pipe flange 7, a hole into which the bolt 8 is fitted is a long hole 21 for adjusting the height of the horizontal pipe 5.

The function of the bolt hole 20 of the branch pipe flange 4 and the bolt hole 21 of the horizontal pipe flange 7 does not change even if they are interchanged with each other or both are elongated holes. Further, this flange can also be applied to a merging single pipe in which the center line 15 of the branch pipe 3 is directed to the center O of the single pipe.

The inner diameter 22 of the flange is substantially the same as the inner diameter of the horizontal pipe 5, and the range in which the inner diameter 22 does not deviate from the inner surface 19 of the branch pipe flange 4 is an amount that can move up and down the horizontal pipe 5. The trajectory of the inner diameter 22 when the horizontal pipe 5 moves up and down is oval. This oval shape must fit within the inner surface 19 of the branch pipe flange 4, which determines the geometry of the branch pipe 3. As a result, the branch pipe 3 becomes a pipe having a larger flow path cross-sectional area than the cross-sectional area of the inner diameter 22 of the horizontal draw pipe 5 (hereinafter referred to as the inner cross-sectional area). If the above-mentioned oval shape is accommodated, an elliptical tube, a square tube, a rectangular tube or the like can be used for the branch tube 3.

In order to perform piping in the state of FIG. 1, the drainage joint 13, the straight pipe 12, and the drainage joint 10 on the floor above the drainage confluence single pipe 1 are normally stacked on the slab 14, and then a horizontal pipe is attached.

To update only one floor, do the following: In the state where the drainage joint 10, the straight pipe 12 and the drainage joint 13 are installed in FIG. 1, first, the single pipe 2 is tilted, and the receiving port 9 is inserted into the drainage joint 10 from the diagonal direction to the innermost side. The single pipe 2 is made vertical in the state. This state is A in FIG. 6 (FIG. 6 shows the receiving port 9 and the flare flange joint, and the single pipe 2 and the branch pipe 3 in the middle part are omitted). Next, the single pipe 2 is pulled down to a state B in FIG. The amount by which the single pipe 2 is lowered varies depending on the variation in floor height. The O-ring 23 is in a position where it cannot be removed from the insertion portion of the drainage joint 10 in the lowered state.

Finally, the flare flange joint 11 is fastened. That is, the gasket 26 is tightened with the clamp 27 with the flare flange 24 of the single pipe 2 and the flare flange 25 of the straight pipe 12 (bolts are not shown). After this, the horizontal pipe 5 is attached, and the piping is completed.

6 is an insertion-type joint that is sealed with an O-ring 23, but may be another insertion-type joint as long as it can be sealed in the state of B in FIG. Moreover, although the lower end of FIG. 6 is the flare flange type joint 11, it may be a normal flange type joint.

As described above, the present invention is intended to be used for renovation of an apartment house, but can be used in cases other than renovation.

Plumbing example of drainage confluence single pipe of the present invention An embodiment in which the branch pipe and the horizontal pipe are in a straight line in the AA view of FIG. An embodiment in which there is an angle between the branch pipe and the horizontal pipe in the AA view of FIG. Branch pipe flange as seen from direction B in Fig. 1 Horizontally drawn pipe flange as seen from direction B in Fig. 1 Illustration of installation of drainage confluence single pipe (A is the insertion state of the receiving port, B is the lowered state) Illustration of prior art

Explanation of symbols

1: Drainage confluence single pipe 2: Single pipe 3: Branch pipe 4: Branch pipe flange 5: Horizontal pipe 6: Gasket 7: Horizontal pipe flange 8: Bolt 9: Receptor 10: Drainage joint 11: Flare flange joint 12 : Straight pipe 13: Drainage joint 14, 14 ': Slab 15: Branch pipe center line 16: Inner pipe inner face 17: Single pipe inner face 18: Horizontal pipe center line 19: Inner face of branch pipe flange 20: Bolt hole 21: Long Hole 22: Inner diameter of horizontal pipe flange 23: O-ring 24, 25: Flare flange 26: Gasket 27: Clamp

Claims (3)

A drainage merging single pipe characterized in that the bolt hole of either or both of the branch pipe and the flange of the horizontal pipe is made into a long hole. The drainage merged single pipe according to claim 1, wherein a center line of the branch pipe is removed from a center of the single pipe, and a flow passage cross-sectional area of the branch pipe is made larger than an inner cross-sectional area of the horizontal draw pipe. The drainage confluence single pipe according to claim 1 or 2, wherein the upper connection of the single pipe is a plug-in type joint, and the lower joint is a flange type joint.

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