JPH02150593A - Intermediate drain joint for double layer pipe - 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] [Industrial application field]

The present invention relates to a collective drainage joint. More specifically, it relates to a collective drainage joint that connects the upstream and downstream sides of a drainage standpipe and connects multiple drainage horizontal branch pipes to this drainage standpipe in the drainage standpipe system of high-rise buildings and apartment complexes. be.

[Conventional technology]

The upper end is used as a collective drainage joint that connects the upstream and downstream sides of a drainage standpipe, and connects a side branch pipe for sewage from a toilet, etc., or a side branch pipe for miscellaneous water from a kitchen, etc. to the drain standpipe at this connection part. The drain standpipe has an upstream connection port and a downstream connection port at the funnel-shaped lower end, and multiple connection ports are provided on the side body surface for connecting drainage horizontal branch pipes. It has been known for a long time. That is, the conventional product was an integrated product provided with the above-mentioned upstream connection port, downstream connection port, and connection ports for a plurality of horizontal drainage pipes.

[Problem to be solved by the invention]

Since the above-mentioned conventional product is an integrated product with multiple connection ports for the drainage horizontal branch pipes, it is difficult to match each connection port with the position of each drainage horizontal branch pipe, making piping construction difficult. This is not easy, and in some cases, the drainage horizontal branch pipe cannot be connected to the connection port of the joint unless a bent connecting pipe or the like is used separately. The present invention eliminates the conventional drawbacks as described above.
The inner joint pipe and the outer joint pipe are divided into upper and lower halves, each with a connection port for the drainage horizontal branch pipe, and by rotating these two divided pipe bodies separately, each connection port can be connected to the drainage horizontal branch pipe. This allows for easy piping construction.

[Means to solve the problem]

The collective drainage joint of the present invention has an inner joint pipe that connects an upstream inner pipe and a downstream inner pipe of a drainage standpipe, and an inner joint pipe that connects an upstream outer pipe and a downstream outer pipe of the drainage standpipe. It consists of a joint outer pipe that forms upstream and downstream ventilation paths with the pipe, and the joint inner pipe has an upstream joint opening to which the upstream inner pipe is connected, and an upstream joint opening to which the downstream inner pipe is connected. A main pipe section formed by a peripheral wall having a larger diameter than each of the downstream joint openings to be connected and gradually tapering toward the downstream joint openings, and a drainage horizontal branch pipe connection connected to this main pipe section. The branch pipe has an eccentric point at the intersection of the tangent on the circumference of the main pipe and the pipe core of the horizontal drainage pipe in order to cause the wastewater to swirl in the main pipe by centrifugal force. In the connected collective drainage joint, each of the inner joint pipe and the outer joint pipe is divided into upper and lower halves, and the two divided pipe bodies are watertightly joined to each other.

[For use]

In the collective drainage joint of the present invention, each of the joint inner pipe and the joint outer pipe is divided into upper and lower halves, and both of these divided pipe bodies are provided with a connection port for the drainage horizontal branch pipe, so that the above-mentioned joint The upper split pipe body and the lower split pipe body of the inner pipe and the joint outer pipe can be rotated separately to match the respective connection ports with the positions of the drainage horizontal branch pipes.

【Example】

Embodiments of the invention will now be described in detail in the accompanying drawings. Each figure shows the collective drainage joint of the present invention. Figure 1 is an exploded perspective view, Figure 2 is a cross-sectional view with a drainage standpipe etc. connected, and Figure 3
The figure is an explanatory diagram. The collective drainage joint of the present invention connects the upstream side and the downstream side of a drainage standpipe, connects a plurality of drainage horizontal branch pipes at the connection part, and is composed of a joint inner pipe and a joint outer pipe. It is something. To describe the above-mentioned drainage standpipe in more detail, this drainage standpipe forms a ventilation path 16 between the upstream and downstream inner pipes 4, which use the inside of the pipe as a drainage route, and the outer peripheral surface of these inner pipes 4. It is constituted by a double tube consisting of an upstream side outer tube and a downstream side outer tube 15. The joint inner pipe that connects the upstream and downstream inner pipes includes an upper joint inner pipe 2 and a lower joint inner pipe 3, and these joint inner pipes 2 and 3 are made of, for example, hard vinyl. It is formed. The upper joint inner tube 2 has a substantially cylindrical shape with an open lower end, and its upper end closed wall has an upstream joint opening 5 of the inner tube 4 and a number of ventilation holes outside the upstream joint opening 5. 6 is open. Further, the side body surface (main pipe portion) of the upper joint inner pipe 2 is provided with a connecting lower for connecting a drainage horizontal branch pipe and a cleaning port 8 at a position substantially opposite to the connecting lower. On the other hand, the lower joint inner tube 3 has a substantially funnel shape with an open upper end and a reduced diameter lower end, and a downstream joint opening 9 of the inner tube 4 is provided at the lower end. Furthermore, two connection ports 10 for connecting drainage lateral branch pipes are provided at substantially opposite positions on the side body surface (main pipe portion) of the lower joint inner pipe 3. This connection port 10 is provided eccentrically with respect to the axis of the lower joint inner tube 3, and the connection lower of the upper joint inner tube 2 is provided eccentrically with respect to the axis of the upper joint inner tube 2. The branch pipe 11 can also be connected tangentially to the side body surface of the joint inner pipe 2.3. That is, the upper joint inner pipe 2 and the lower joint inner pipe 3 are connected to the upstream joint opening 5 and the downstream inner pipe 4 to which the upstream inner pipe 4 is connected.
The main pipe portion (side body surface) is formed of a peripheral wall having a larger diameter than each of the downstream joint openings 9 to which it is connected, and gradually tapers toward the downstream joint opening 9; It has the above-mentioned branch pipe 11 for connecting a connected drainage horizontal branch pipe. This branch pipe 11 is eccentrically connected at the intersection of a tangent on the circumference of the main pipe and the pipe core of the horizontal drainage pipe in order to cause the drainage water to swirl in the main pipe by centrifugal force. The lower part of the upper joint inner pipe 2 and the upper part of the lower joint inner pipe 3 as described above are joined in a watertight manner. In order to join watertightly, as shown in the figure, a protrusion 12 is provided on the lower outer circumferential surface of the upper joint inner pipe 2, and a recessed line 13 is provided on the upper inner circumference of the lower joint inner pipe 3, and the protrusion 12 and the recess are provided. At the same time as fitting the strip 13, the packing 1
4, they are rotatably joined. However, the connection lower of the upper joint inner pipe 2 and the lower joint inner pipe 3
After aligning the connection ports 10 with the respective drainage lateral branch pipes to be connected, the upper joint inner pipe 2 and the lower joint inner pipe 3 may be unrotatably joined with an adhesive or the like. An outer tube 15 is provided on the outer periphery of the inner tube 4, and has a double tube structure in which a ventilation path 16 is formed between them. On the other hand, the outer sides of the upper and lower inner joint tubes 2.3 are covered by outer joint tubes 17 with a predetermined interval. The joint outer tube 17 is also divided into upper and lower halves, which are joined with bolts 19 via a packing 1B. In order to connect the upstream and downstream sides of a drainage standpipe and to connect a plurality of drainage horizontal branch pipes according to the present invention as described above,
First, the upstream side of the inner tube 4 is fitted into the upstream joint opening 5 of the upper joint inner tube 2. Therefore, as shown in FIG. 3, the upper joint inner pipe 2 is rotated to align its connecting lower with the drainage horizontal branch pipe, and the joint outer pipe 17 on the outside of the upper joint inner pipe 2 is also positioned in the same manner. After matching, the branch pipe 11 is inserted into the connecting lower and connected to the drainage horizontal branch pipe via the branch pipe 11. Next, the lower joint inner tube 3 and the outer joint tube 17 on the outside thereof.
, and align the connection port 10 with the position of the drainage horizontal branch pipe.
The connection port 10 and a drainage horizontal branch pipe are connected via a branch pipe 11. After that, the downstream joint opening 9 of the lower joint inner pipe 3
The downstream side of the inner tube 4 is fitted into the inner tube 4. In this case, the lower joint inner tube 3 is rotatably joined to the upper joint inner tube 2, and
After fitting the downstream side of the inner tube 4 into the downstream joint opening 9,
The lower joint inner pipe 3 may be rotated to align its connection port 10 with the drainage horizontal branch pipe. And the joint outer pipe 17
They are joined with bolts 19 through packings 18, and the upstream and downstream outer tubes 15 are connected to the joint portions of the upper and lower joint outer tubes 17.

【Effect of the invention】

As described above, according to the collective drainage joint of the present invention, each divided pipe body of the joint inner pipe and the joint outer pipe, each of which is divided into two upper and lower parts, can be individually rotated to connect each connection port with these parts. Since it can be aligned with the position of the drainage horizontal branch pipe to be connected, piping construction is easy and construction efficiency is improved. Further, since the divided pipe bodies of the inner joint pipe and the outer joint pipe are watertightly joined to each other, there is no risk of leakage of drainage water from the connected drainage horizontal branch pipe. Furthermore, since the inside of the collective drainage joint is always maintained at atmospheric pressure by the ventilation path, the drainage water that has flowed into the joint does not flow back into the drainage horizontal branch pipe. In addition, the water in the trap is prevented from breaking, and there is no risk that odor will be discharged outdoors and into the room by the outer joint pipe.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is an exploded perspective view;
FIG. 2 is a cross-sectional view of a state in which a drainage standpipe and the like are connected, and FIG. 3 is an explanatory view. In the figure, 1 is the collective drainage joint, 2 is the upper joint inner pipe, 3 is the lower joint inner pipe, 4 is the inner pipe, 5 is the upstream joint opening, 7 is the connection port, 9 is the downstream joint opening, and 10 is the 11 is a branch pipe, 15 is an outer pipe, 16 is a ventilation path, and 17 is a joint outer pipe.

Claims (1)

[Claims] Connecting the upstream and downstream sides of a drainage standpipe composed of a double pipe consisting of an inner pipe with a drainage path inside the pipe and an outer pipe forming a ventilation path between the outer peripheral surface of the inner pipe, A collective drainage joint for a two-layer pipe that connects a drainage horizontal branch pipe to the drainage standpipe at the connection part, the joint inner pipe connecting the upstream inner pipe and the downstream inner pipe of the drainage standpipe, and the above-mentioned The joint outer pipe connects the upstream outer pipe and the downstream outer pipe of the drainage standpipe to form an upstream and downstream ventilation path between the joint inner pipe, and the joint inner pipe is connected to the joint inner pipe. It is formed with a peripheral wall having a diameter larger than each of the upstream joint opening to which the upstream inner pipe is connected and the downstream joint opening to which the downstream inner pipe is connected, and gradually increases toward the downstream joint opening. It has a tapered main pipe section and a branch pipe connected to the main pipe section for connecting a drainage horizontal branch pipe. In a collective drainage joint that is eccentrically connected at the intersection of the tangent on the circumference of the pipe and the pipe core of the horizontal drainage branch pipe, the joint inner pipe and the joint outer pipe are each divided into two upper and lower parts. A collective drainage joint characterized in that the split pipe bodies are watertightly joined to each other.