JPH06117001A - Two-layer drain vertical pipe system - Google Patents

Abstract

PURPOSE:To facilitate the connection with various kinds of joints and a test of high water level and cleaning of the inside of a piping by making a drain system path of an inner pipe and providing a ventilating system path between the inner pipe and an outer pipe to connect an upstream part of a drain vertical pipe to a downstream part through an intermediate joint. CONSTITUTION:An intermediate join 5 and vertical pipe unit 1 are interconnected with a joint outer pipe 81 of a multifunctional joint 8 and a joint inner pipe 82 is inserted into the joint outer pipe 81 from a changing joint inserting hole part 81c. Then, a cap 82d of a plug 82c is removed from the joint inner pipe 82 and a ventilating pipe 83 is connected to the join inner pipe 82. Next, in a test of high water level, the ventilating pipe 83 is removed and the outer end flanges 81d, 82e of the joint outer pipe 81 and inner pipe 82 are released from the fastening to each other to draw out the joint inner pipe 82. Further a joint inner pipe 82b for the test of high water level is changed with the joint inner pipe 82 to be inserted and set into the inserting hole part 81c for the test of high water level. Next, in cleaning the inside of the piping, the joint inner pipe 82 for connecting the vertical pipe is changed with a cleaning joint inner pipe 82A to be set. After the completion of cleaning the inside of the pipe, the cleaning joint inner pipe 82A is interchanged with the joint inner pipe 82 for connecting the vertical pipe.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a two-layer drainage plumbing system which is installed in a hotel, a high-rise building, an apartment building, or the like.

[0002]

2. Description of the Related Art FIG. 12 is a sectional view showing an intermediate joint portion of a conventional two-layer drainage vertical pipe system in a half cross section, and FIG. 13 is an enlarged sectional view showing an upstream connecting portion of the intermediate joint shown in FIG. FIG. 14 is an enlarged sectional view showing a downstream side connecting portion of the intermediate joint of FIG. In the figure, 1 is a drainage vertical pipe extending over multiple floors, and this drainage vertical pipe 1 is a two-layer pipe consisting of an upstream inner pipe 10, an upstream outer pipe 11, a downstream inner pipe 12 and a downstream outer pipe 13. It is composed. The insides of the upstream inner pipe 10 and the downstream inner pipe 12 are drainage routes A1 and A2, and the upstream ventilation pipe B1 is provided between the upstream inner pipe 10 and the upstream outer pipe 11. Downstream inner pipe 1
2 and the downstream outer pipe 13 are formed as a ventilation path B2 on the downstream side.

2 is an intermediate joint, and this intermediate joint 2 is
Two layers of a joint inner pipe 20 that connects the upstream inner pipe 10 and the downstream inner pipe 12 of the drainage standing pipe 1, and a joint outer pipe 21 that connects the upstream outer pipe 11 and the downstream outer pipe 13 Made of fitting composition.

In the intermediate joint 2, the joint inner pipe 20
Receptacles 20a and 20b and receptacles 21a and 21b are formed at the upper and lower ends of the outer joint pipe 21, respectively. Further, in the upper part of the joint inner pipe 20 in the intermediate joint 2,
A ventilation gallery 22 is provided for discharging positive pressure air generated inside the upstream side inner pipe 10 and the downstream side inner pipe 12 of the drainage standing pipe 1 and for replenishing air at the time of negative pressure. In addition, the trunk portion of the outer joint pipe 21 is provided with a connecting branch pipe portion 23 for connecting the drain horizontal branch pipes of each floor over the multi-storey floor.

Then, the upstream receiving port 20a of the joint inner pipe 20
The upstream inner pipe 10 of the drainage vertical pipe 1 is inserted and joined, and the upstream outer pipe 11 of the drainage vertical pipe 1 is inserted and joined to the upstream side receiving port 21a of the joint outer pipe 21 via the seal ring 3. is doing. In addition, the downstream receiving port 20 of the joint inner pipe 20
The downstream inner pipe 12 of the drainage vertical pipe 1 is inserted and bonded to b, and the downstream outer pipe 13 of the drainage vertical pipe 1 is inserted and joined to the downstream side receiving port 21b of the joint outer pipe 21 via the seal ring 4. ing.

[0006]

Since the conventional two-layer drainage vertical pipe system is constructed as described above, the two-layer drainage vertical pipe 1 and the intermediate joint 2 are related to each other, especially in the recent construction method and construction method. Corresponding to lack of manpower, drainage plumbing pipes 1 to 3 on each floor
In the piping construction method in which the vertical pipe unit is connected to the vertical pipe unit of the previous section while lifting and unloading the vertical pipe unit with a tower crane etc., a single pipe (single layer) system that is an existing drainage system is used. In comparison, the joining method was somewhat difficult.

That is, at the time of unloading by a tower crane or the like, the inner and outer pipes of the upstream portion of the standing pipe unit and the intermediate joint are simultaneously joined, the dimensional error of the standing pipe unit is adjusted, and the joint inner pipe is Since it is made of resin and has a socket structure,
When the vertical pipe unit is unloaded, if there is no absolute vertical accuracy, there is a problem that the inner pipe receiving portion 20a of the intermediate joint 2 is damaged.

Regarding the full water test, in the drainage standpipe 1 and the intermediate joint 2 in which the inside of the inner pipe serves as a drainage passage and the space between the inner pipe and the outer pipe serves as a ventilation passage, the intermediate joint is particularly preferable. In No. 2, since the ventilation gallery 22 is provided on the upper portion of the joint inner pipe 20, it is difficult to perform the full water test work for finding the connection point.

That is, in the water filling of the drainage vertical pipe 1 system in the full water test, since the ventilation gallery 22 is provided above the joint inner pipe 20 of the intermediate joint 2, only the drainage route to be subjected to the full water test can be verified. However, there was a problem that not only the node that should be full-filled, but the full-filling test for the entire drainage system was repeated for each node, which required extra manpower and time including the preparation work.

Further, regarding cleaning, the recent diversification and improvement of eating habits has resulted in a large amount of meat and fats and instant retort foods containing a large amount of fats and oils in the kitchen waste.
As a result, oil and fat are attached to the inside of the drainage vertical pipe 1, and other food waste is attached to the drain and rise pipe 1, which is a cause of pipe clogging.

In such a situation, the conventional drainage system is provided with only one cleaning point at the most upstream part, though it is necessary to clean the inside of the pipe half a year or once a year. Therefore, the cleaning method varies from the uppermost stream of the drainage pipe 1 to the drainage basin connected to the drainage horizontal main pipe through the leg joint on the lowest floor of the drainage pipe, and the above-mentioned oil and fat and the garbage attached to it are varied. Since it is not possible to perform sufficient cleaning of the drainage vertical pipe system, it not only flows back to the connection port of the drainage lateral branch pipe of each floor over the multi-storey floor, but also the cleaning work. However, it was troublesome and costly.

The present invention has been made to solve the above-mentioned problems, and it is easy to perform a method of connecting a two-layer drainage pipe and a joint for various purposes and a full water test, and a method of cleaning the inside of the pipe. It is an object of the present invention to provide a two-layer drainage vertical pipe system with a multifunctional joint that can be improved.

[0013]

A two-layer drainage vertical pipe system according to the invention of claim 1 is an inner pipe having a drainage path inside the pipe,
A two-layer pipe composed of a two-layer pipe consisting of an outer pipe forming a ventilation path between the inner pipe and the outer peripheral surface of the drain pipe, and connecting the upstream side and the downstream side of a drainage standing pipe over a multi-story floor with an intermediate joint. In the drainage vertical pipe system, a multifunctional joint is connected to the upstream side of the intermediate joint via a height adjusting pipe having a two-layer pipe structure, and the multifunctional joint has a replacement joint member that can be exchanged depending on the application. It is configured.

In a two-layer drainage vertical pipe system according to a second aspect of the present invention, the multifunctional joint according to the first aspect has an exchange joint insertion hole portion in a body portion and an outer pipe upstream of the drainage vertical pipe. A joint outer pipe that is fitted and connected over the outer pipe of the height adjusting pipe, and is detachably inserted in a direction that traverses the inside of the joint outer pipe from the exchange joint insertion hole portion of the joint outer pipe. A joint inner pipe for each application, and the joint inner pipe communicates a ventilation passage formed between the inner pipe and the outer pipe of the height adjusting pipe with a ventilation passage of the drainage vertical pipe. Along with this, the drainage path inside the inner tube of the height adjusting tube and the drainage path inside the inner tube of the drainage standpipe are connected to each other, and the ventilation path and the drainage path are isolated from each other. .

[0015]

In the two-layer drainage vertical pipe system according to the present invention, the drainage vertical pipe extending over the multi-story floors is a vertical pipe unit having each floor or the second and third floors as one unit, and in this vertical pipe unit, the upstream of the intermediate joint of each floor. Depending on the building process and the procedure of its piping work (pipe connection → full water test), the vertical pipe mutual connection and the ventilation pipe branch connection part are used by inserting the multifunctional joint on the side through the height adjustment pipe. To facilitate the piping work, and in the full water test after piping, you can easily perform the full water test by replacing the replacement joint member of the multifunctional joint with the one for the full water test. After the test, by replacing the replacement joint member with one for the required purpose from one for full water test, the function according to the purpose (connection between vertical pipes, branch pipe branch connection, drain horizontal branch pipe connection) can be achieved. Having In addition, in the piping state after the building is completed, by replacing the replacement joint member with a cleaning member, in addition to cleaning the block unit of the multifunctional joint inserted in the drainage vertical pipe, Easy removal of fats and oils and garbage attached to it.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view showing a multifunctional joint of a two-layer drainage vertical pipe system according to an embodiment of the present invention. The same or corresponding parts as in FIG.
In the figure, 5 is a height adjusting pipe connected to the upper part of the intermediate joint 2 (see FIG. 6), and this height adjusting pipe 5 is composed of a combination of an adjusting inner pipe 5A and an adjusting outer pipe 5B. . 6 is a loose flange attached to the outer periphery of the upper portion of the adjusting outer pipe 5B, and 7 is a loose flange attached to the outer periphery of the lower outer pipe 11 of the drainage vertical pipe 1.

Reference numeral 8 denotes a multi-functional joint for connecting the height adjusting pipe 5 and the drainage standing pipe 1 on the upstream side. The multi-functional joint 8 includes a box-shaped outer joint pipe 81 and an outer joint of the joint. It comprises an inner joint pipe 82 as a replacement joint member detachably attached to the pipe 81.

Here, the multi-function joint 8 will be described in more detail. The outer joint pipe 81 has outwardly facing flanges 81a and 81b integrally formed at the upper and lower ends thereof, and a laterally oriented flange 81a formed at the body. It has a shape configuration having an exchange joint insertion hole portion 81c, an outer end flange 81d of the exchange joint insertion hole portion 81c, and upper and lower engagement grooves 81e and 81f formed on the inner peripheral surface of the body portion.

On the other hand, the joint inner pipe 82 of the multifunction joint 8
Are upper and lower flanges 82a and 82b which are removably fitted and engaged with the engaging grooves 81e and 81f, a cylindrical plug 82c integrally formed on the outer periphery of the inner tube body of the joint, and this plug. A cap 82d detachably screwed into an outer end opening of the plug 82c, and an outer end flange 82 of the plug 82c.
and the upper and lower flanges 82a and 82b have ventilation slits 82f and 82g.
Is provided.

In the above, the multifunctional joint 8 shown in FIG.
The joint inner pipe 82 (replacement joint member) of the type is a vertical pipe connecting type, and the joint inner pipe 82 for cleaning shown in FIGS.
A, the joint inner pipe 82B for the full water test shown in FIGS. 4 and 5 can be replaced.

Inner pipe 82A for cleaning shown in FIGS. 2 and 3.
Is provided with a cleaning port 82h on its body.
2h is detachably closed by a tubular cap 82i, and an intake valve V1 that operates at a negative pressure generated by the drawing of air by the drainage flow in the pipe is provided at the outer end opening of the tubular cap 82i. It may be configured.

The fitting inner pipe 82B for the full water test shown in FIGS. 4 and 5 is provided with a water injection port 82j and a drain valve V2.

Next, the procedure for performing the pipe connection, full water test, and cleaning of the inside of the pipe will be described. First, the pipe connection will be described. In this case, as to the method of connecting the vertical pipe unit of the drainage vertical pipe 1, as shown in FIG. 11, the case of connecting the current vertical pipe unit in the work completed state of the previous vertical pipe will be described. First, as shown in FIGS. 6 and 11, the lower end of the now free standing tube unit 1 is set at a predetermined position on the floor where the front free standing tube unit of the drainage standing tube 1 is already installed. In this case, a clearance L (see FIG. 7) is set between the previous section standing tube unit and the present section standing tube unit by the set, and this clearance L is checked.

Next, the clearance L after the above-mentioned check
The height adjusting pipe 5 is cut to a length corresponding to the dimension of, and the cut height adjusting pipe 5 is connected to the upstream side of the intermediate joint 2 of the preceding section. In this case, the loose flange 6 is attached to the adjusting outer pipe 5B of the height adjusting pipe 5, and the loose flange 7 is also attached to the outer circumference of the upstream outer pipe 11 of the present vertical pipe unit (upstream drainage vertical pipe) 1. Install it.

In this state, the lower part of the joint outer pipe 81 of the multifunctional joint 8 is fitted into the upper end portion of the adjusting outer pipe 5B of the height adjusting pipe 5, and the lower end flange 81b of the joint outer pipe 81 and the height adjusting pipe 5 are fitted. Tighten the loose flange 6 with the bolt and nut.

In this way, the upstream outer pipe 11 of the drainage vertical pipe (now the vertical pipe unit) 1 is attached to the upper part of the outer joint pipe 81 of the multifunctional joint 8 attached to the upper part of the height adjusting pipe 5. The lower part is fitted and the loose flange 7 of the upstream outer pipe 11 and the upper end flange 81a of the joint outer pipe 81 are fastened with bolts and nuts.

In this way, if the intermediate joint 5 and the present joint pipe unit 1 are connected by the joint outer pipe 81 of the multifunction joint 8, the joint outer pipe 81 is fitted with the exchange joint insertion hole 81C. The inner tube 82 is inserted. In this case, the upper and lower flanges 82a and 82b of the joint inner pipe 82 are fitted into and engaged with the engaging grooves 81e and 81f of the joint outer pipe 81, and the joint inner pipe 8
The second outer end flange 82e is brought into contact with the outer end flange 81d of the joint outer tube 81, and both are fastened and fixed with bolts and nuts.

Thereafter, the plug 82c of the joint inner tube 82
The pipe connecting work is completed by removing the cap 82d from the container and connecting the ventilation pipe 83 instead of the cap 82d.

When performing a full water test from such a pipe connection state, first, after removing the vent pipe 83, the outer end flanges 81d and 82e of the joint outer pipe 81 and the joint inner pipe 82 are removed.
The mutual fastening is released, and the joint inner pipe 82 is pulled out from the exchange joint insertion hole 81c of the joint outer pipe 81.

The removed joint inner pipe 82 is replaced with the joint inner pipe 82B for the full water test shown in FIG.
B is inserted and set in the exchange joint insertion hole 81c of the joint outer pipe 81. In this way, the full water test can be easily performed by only setting the joint inner pipe 82 for standing pipe connection with the joint inner pipe 82B for full water test.

When the inside of the pipe is cleaned in the vertical pipe connection state of FIG. 1, the inner pipe 82 for connecting the vertical pipe is replaced with the inner pipe for cleaning shown in FIG. 2 in the same manner as the above case. By replacing the set with 82A, the inside of the pipe can be easily cleaned.

In the above cleaning work, in the case of the drainage system as a whole from the cleaning point, if the joint unit in which the multifunctional joint 8 is inserted and the clogging point are known from the uppermost intermediate joint 2, In the relevant section (floor), at the bottom end of the relevant section, a fitting inner pipe 82A for a full water test depending on the above case
Should be replaced with the joint inner pipe 82 for vertical pipe connection.

In such a state that the inner pipe of the joint is replaced, if an expert cleans the inside of the pipe and removes the oil and fat and the garbage attached to the oil and fat from the insertion portion of the inner pipe for joint cleaning 82A for cleaning the lowest floor of the section. Good.

After completion of the above-mentioned pipe cleaning operation,
The cleaning inner pipe 82A is a joint inner pipe 82 for connecting a vertical pipe.
Should be replaced with If a loop vent pipe from the drain horizontal branch pipe is connected in such a piping state, a union etc. should be placed near the connection port of the vent pipe, and the separation pipe and re-pipe for the work To make it easy.

[0035]

As described above, according to the present invention, the multifunctional joint can be used to easily and effectively perform the pipe connection of the drainage vertical pipe unit, the full water test inside the pipe, and the cleaning work inside the pipe. In addition, if it becomes necessary to renew the pipe due to aging or corrosion of the pipe material due to aging, cut the upper and lower parts of the drainage vertical pipe on the floor to the required size of the multifunctional joint, and install the vertical pipe at the cutting point. There is an effect that it is possible to easily perform the work of removing the standing pipe and the work of constructing the new pipe by installing the mutual and vent pipe branch connecting members. Also, if a multifunctional joint has already been installed, replace the replacement joint member of this multifunctional joint or use the above-mentioned method to add a small-scale water field requires large-scale construction like the conventional method. Without doing so, there is an effect that it can be easily installed in a short time.

[Brief description of drawings]

FIG. 1 is a sectional view showing a multifunctional joint of a two-layer drainage vertical pipe system according to an embodiment of the present invention.

FIG. 2 is a vertical sectional view of a multifunctional joint according to another embodiment of the present invention.

3 is a cross-sectional view of FIG.

FIG. 4 is a vertical sectional view of a multifunctional joint according to still another embodiment of the present invention.

5 is a cross-sectional view of FIG.

FIG. 6 is a diagram showing a related configuration of an intermediate joint and a multifunction joint according to an embodiment of the present invention.

FIG. 7 is an explanatory diagram when setting the vertical tube now.

FIG. 8 is a cross-sectional view showing a retracted state of the vertical tube of FIG.

9 is a cross-sectional view showing a state in the process of setting the replacement joint member of the multifunctional joint on the now-standing tube of FIG.

FIG. 10 is a cross-sectional view showing a state where the multifunctional joint is completely accommodated.

FIG. 11 is an explanatory view of the procedure of a full water test of a drainage pipe.

FIG. 12 is a configuration explanatory view showing a half section of an intermediate joint portion in a conventional two-layer drainage vertical pipe system.

13 is an enlarged sectional view showing an upstream connecting portion of the intermediate joint of FIG.

14 is an enlarged cross-sectional view showing a downstream side connecting portion of the intermediate joint of FIG.

[Explanation of symbols]

 1 Drainage Vertical Pipe 2 Intermediate Joint 5 Height Adjusting Pipe 8 Multifunctional Joint 10 Upstream Inner Pipe 11 Upstream Outer Pipe 12 Downstream Inner Pipe 13 Downstream Outer Pipe 81 Joint Outer Pipe 82 Joint Inner Pipe (Replacement Joint Member) 82A joint inner pipe (replacement joint member) 82B joint inner pipe (replacement joint member) A1 drainage route A2 ventilation route

Claims (2)

[Claims] 1. An upstream of a drainage standing pipe which is composed of a two-layer pipe composed of an inner pipe having a drainage path inside the pipe and an outer pipe forming a ventilation path between the outer peripheral surface of the inner pipe and extending over a multi-story floor. In a two-layer drainage vertical pipe system in which a side and a downstream side are connected by an intermediate joint or the like, a multifunctional joint is connected to the upstream side of the intermediate joint via a height adjusting pipe having a two-layer pipe structure. The two-layer drainage vertical pipe system, wherein the functional joint has an exchangeable joint member that can be exchanged according to the application. 2. The multifunctional joint has an exchange joint insertion hole portion in a body portion and is fitted and connected across an upstream outer pipe of the drainage vertical pipe and an outer pipe of the height adjusting pipe. A joint outer pipe and a joint inner pipe for each application which is detachably inserted in a direction that traverses the inside of the joint outer pipe from the exchange joint insertion hole portion of the joint outer pipe. The drainage path inside the inner pipe of the height adjustment pipe and the drainage are provided while connecting the ventilation passage formed between the inner pipe and the outer pipe of the height adjustment pipe and the ventilation passage of the drainage standing pipe. The two-layer drainage vertical pipe system according to claim 1, wherein the vertical pipe is connected to a drainage route inside an inner pipe of the vertical pipe and isolates the ventilation route and the drainage route.