JP3073253U - System fitting header for collective drainage pipe - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To connect the ends of a plurality of horizontally drawn pipes in a limited pipe space to a vertical pipe line in a non-bulky connection form, Provided is a system joint header for a collective drainage pipe which can easily cope with visual inspection and cleaning of the inside. SOLUTION: A plurality of horizontal pipe joints (2a to 2d) for connection to a horizontal drawing pipe are respectively connected to a cylindrical main body (1) having pipe joints for connection to a vertical pipe at upper and lower ends thereof. They are integrally formed so as to communicate with each other at a downward gradient along the tangential direction of the inner peripheral wall. At least two or more horizontal pipe joints among the plurality of horizontal pipe joints each have connection ends (6a to 6d) which are oriented in the same direction to each other for connection with the horizontal drawing pipe.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 In the present invention, for example, drainage from a plurality of horizontal pipes on each floor is interposed between the upper and lower vertical pipes in a drainage vertical pipe in a medium-to-high-rise building such as an apartment house. The present invention relates to a system joint header for a combined drainage pipe to be merged.

[0002]

[Prior art]

 In drainage vertical pipes of middle- and high-rise buildings, as a pipe joint that forms a part of the vertical pipes and joins the horizontal pipes on each floor, it is necessary to connect multiple horizontal pipes. It is well known that a system joint header for collective drainage pipes integrally provided with a horizontal pipe joint is provided.

In a general joint drainage system joint header, for example, as disclosed in Japanese Patent Application Laid-Open No. H08-21583, connection joints with vertical pipes are provided at upper and lower ends of a header main body, and a peripheral wall of the main body is provided. Are provided with two to four pipe joints for laterally drawn pipes. These pipe joints for horizontal drawing pipes are generally provided in a direction substantially perpendicular to the vertical pipes, and the directions of the pipe joints are 90 degrees or 180 degrees with each other.

[0004] In order to improve the flow-down performance of the drainage pipe in such a middle-high-rise building, it is also known that the drainage flowing down the vertical pipe is a swirling flow descending along the pipe wall. For example, Japanese Unexamined Patent Publication No. 7-158135 discloses that a joint header used to connect a horizontal drawing pipe on each floor to a vertical pipe in such a drainage system impedes swirling flow in the vertical pipe. A joint header is shown in which the inlet from the horizontal pipe to the vertical pipe is provided with a downward slope and tangentially in order to achieve a smooth and smooth merging.

[0005]

[Problems to be solved by the invention]

 Conventional system drainage system fitting headers face the same direction in the building pipe space because the ends of the pipe joints for connection to the horizontal pipes are oriented in different directions. In order to connect the ends of the multiple drawn pipes to the fittings of the header, it is necessary to interpose a curved pipe such as an elbow between at least some of the fittings, and in a narrow pipe space. There is a problem that the structure around the header becomes bulky and the piping work and the maintenance work are often inconvenient. As a result, even more convenience is required for regular work such as inspection and cleaning of the joint header.

Accordingly, the problem to be solved by the present invention is to increase the number of ends of a plurality of unidirectionally drawn horizontal pipes in a limited pipe space in view of the disadvantages of the prior art. An object of the present invention is to provide a system joint header for collective drainage pipes, which can be connected to a vertical pipeline in a connection mode without any trouble, and which can easily cope with visual inspection and cleaning of the inside.

[0007]

[Means for Solving the Problems]

 According to the present invention, a system drain header for a collective drainage pipe interposed between an upper vertical pipe and a lower vertical pipe in a drainage vertical pipe to merge drainage from a plurality of horizontal draw pipes into the vertical pipe. A cylindrical main body having an upper pipe joint connected to the lower end of the upper vertical pipe and a lower pipe joint connected to the upper end of the lower vertical pipe; and a cylindrical main body for connection with the horizontal drawing pipe, respectively. A plurality of horizontal pipe joints integrally formed on the peripheral wall of the cylindrical body so as to communicate with the inside at a downward gradient along a tangential direction of the inner peripheral wall of the cylindrical body, and particularly to solve the above-described problems. For this purpose, at least two or more horizontal pipe joints are characterized in that they have connection ends oriented in the same direction as each other for connection with the horizontal drawing pipe.

According to a preferred embodiment of the present invention, a through hole for internal cleaning is provided in the tubular main body at a height between the upper pipe joint and the base of the horizontal pipe joint. Is opened and closed by a lid with a see-through window. In this case, the through-hole is usually closed by a lid with a see-through window.Through this see-through window, it is possible to visually monitor the flow of drainage inside and the presence or absence of foreign matter that may obstruct the flow. At the time of maintenance work such as internal inspection and cleaning, it is only necessary to remove the lid and open the through hole, and it is not necessary to remove one of the side draw pipes and perform maintenance work like many conventional system joint headers. Almost no.

[0009] In the system joint header according to the present invention, the connection ends of all the horizontal pipe joints with the horizontal pipes may be oriented in the same direction, or at least two or more horizontal pipe joints may be connected to the horizontal pipes. The connection ends may be oriented in the same direction as each other, and the connection end of one or more other horizontal pipe joints with the horizontal drawing pipe may be oriented in a direction perpendicular to the above direction.

That is, in the present invention, at least two or more horizontal pipe joints among the plurality of horizontal pipe joints to be connected have connection ends facing the same direction for connection with the horizontal drawing pipe. Have. In many middle- and high-rise buildings, such as multi-family buildings, multiple drainage horizontal pipes have the same pipe end from one wall in a pipe space that can be opened facing the outside of the open corridor. Protruding in the direction. In order to connect the horizontal pipe joints of the joint drainage system joint header according to the present invention to the horizontal pipe ends that are oriented in the same direction, the protrusion length of each horizontal pipe is set at the position of the header. At the same time, it is only necessary to perform the pipe end joint processing, and the connection joint structure between each horizontal pipe joint and the horizontal drawn pipe can be appropriately selected, for example, flange joint, screw joint, socket joint, welded joint, etc. Although accessories such as seal packing and flexible joints may be interposed, it is basically unnecessary to interpose extra bent pipes such as elbows on a plurality of horizontal drawing pipes as in the past.

When all of the horizontal pipes in the pipe space of the building project from one wall with the pipe ends directed in the same direction, the system joint header according to the present invention requires all horizontal pipes to be connected. It is sufficient that the connection ends of the joint with the horizontal drawing pipe face in the same direction. Also, within the pipe space of a building, a plurality of horizontal pipes protrude from one wall with the pipe ends facing in the same direction, while another horizontal pipe or pipes from another wall cross in the orthogonal direction. In the system joint header according to the present invention, the connection ends of the plurality of horizontal pipe joints facing the one wall surface with the horizontal drawing pipe are in the same direction (in the same direction). In other words, the connection end with the horizontal drawing pipe in another one or more horizontal pipe joints facing the another wall surface is oriented in a direction perpendicular to the direction (that is, the other direction). (The direction facing the wall surface).

The system drain header for a collective drain according to the present invention is preferably formed as an integral structure made of cast iron, die-cast, ceramic or plastic, the cylindrical body of which has an upper fitting, a lower fitting and a plurality of fittings. Is provided. The upper fitting is a fitting that is connected to the lower end of the upper vertical pipe, and is generally configured as a socket fitting receiving port for receiving the lower end of the upper vertical pipe. Various types of pipe joints such as a flange joint and a screw joint may be configured according to the requirements. The lower fitting is a fitting that is connected to the upper end of the lower vertical pipe, and is also generally configured as a socket fitting spout that is received in the socket at the upper end of the lower vertical pipe. It goes without saying that various types of pipe joints such as a flange joint and a screw joint may be configured according to the connection type with the joint.

[0013] A plurality of lateral pipe joints formed laterally on the peripheral wall of the cylindrical main body are connected to the inside of the cylindrical main body with respect to a tangential line of the inner peripheral wall of the cylindrical main body with respect to the inside of the cylindrical main body for connection with the horizontal drawing pipe. Are formed integrally on the peripheral wall of the cylindrical main body so as to communicate with each other at a downward gradient along the direction, and at least two or more of these horizontal pipe joints are respectively connected to the horizontal drawn pipe. It has connection ends oriented in the same direction as each other for connection.

That is, in the collective drainage pipe joint header according to the present invention, the plurality of horizontal pipe joints communicate with the inside of the cylindrical body at a downward gradient along the tangential direction of the inner peripheral wall of the cylindrical body. Since they are integrally formed on the peripheral wall of the cylindrical body, the communication bases of all the horizontal pipe joints can be arranged adjacently on the circumference at a certain height position of the cylindrical body. Even if many horizontal pipe joints are provided, a compact header structure with a small height dimension will be achieved, and it is possible to reduce the volume of space required at the junction of the vertical pipe with the horizontal drawing pipe.

[0015] In the joint drainage system joint header according to the present invention, since each horizontal pipe joint communicates on the inner peripheral wall surface of the cylindrical body along a tangential direction with a downward gradient, the cylindrical pipe is connected from each horizontal pipe joint. The streamlines of the wastewater flowing into the inside of the cylindrical body follow a downward spiral trajectory that is almost parallel to each other.Therefore, in the inflow part on the inner wall surface of the cylindrical body, the shunts from each horizontal pipe joint interfere with each other. However, it is possible to maintain a stable and stable discharge as a downward swirling flow.

In the present invention, the degree of the downward gradient of each horizontal pipe joint may be relatively gentle as long as the backflow from the vertical pipe does not occur. For example, the present invention is not limited to the application, but even if a spiral rib for generating a swirling flow is formed on the inner wall surface of the vertical pipe, the gradient of the spiral rib is set at a far gentler angle than the angle of the spiral rib. be able to.

[0017]

[Embodiment of the invention]

 DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a plan view of a system joint header for a collective drainage pipe according to a first embodiment of the present invention, and FIG. 2 shows a connection state with each horizontal drawing pipe.

The collective drainage system joint header includes a cylindrical main body 1 and four horizontal pipe joints 2a to 2d, and is cast as an integral component made of cast iron. The cylindrical body 1 has a conical inflatable body whose lower part is smoothly reduced in diameter, and its upper end is formed as a socket of a socket joint for receiving the lower end of the upper vertical pipe 7a. The lower end of the cylindrical main body 1 is a lower pipe joint 3b formed as a spout of a socket joint inserted into the upper end of the lower vertical pipe 7b.

Four lateral pipe joints 2a to 2d are integrally formed on the expanding body portion of the cylindrical main body 1 at a substantially intermediate height position from the peripheral wall to the side. These horizontal pipe joints 2a to 2d are provided inside the cylindrical main body 1 for connection with the four horizontal drawing pipes 8a to 8d, which protrude in the same direction from the wall A of the pipe space on the building side. On the other hand, they communicate with each other at a downward gradient along the tangential direction of the inner peripheral wall of the cylindrical main body expansion and contraction part, and these four horizontal pipe joints all have connection ends (flange ends in this example) facing in the same direction. 6a to 6d. These connection ends 6a to 6d are connected to connection flanges provided at the pipe ends of the four laterally drawn pipes 8a to 8d projecting from the wall surface A via seal rings (not shown). Connection with each horizontal draw pipe is established.

A through hole 4 for inspection and cleaning of the inside of the main body is provided at a lower portion of the upper joint 3a of the cylindrical main body 1, that is, at a shoulder of the expanding body at a position higher than a communication base of the horizontal joints 2a to 2d. A cover 5 with a see-through window is detachably attached to the through hole 4 by, for example, screw fitting. The lid 5 normally closes the through hole 4 and is removed during maintenance work to allow access to the interior of the body by the cleaning tool. Such a through-hole with a lid may be provided at a plurality of locations so as to complement portions that are mutually negative.

In this system drain header for a collective drainage pipe, since the horizontal pipe joints 2 a to 2 d communicate with the inner peripheral wall surface of the cylindrical main body 1 at a downward gradient along the tangential direction, the horizontal pipe joints 2 a to 2 d are connected. The streamlines of the drainage flowing into the inside of the cylindrical body 1 from 2d follow a downward spiral trajectory substantially parallel to each other and are discharged into the vertical pipe. For this reason, at the inflow portion on the inner wall surface of the cylindrical main body, the branch flows from the horizontal pipe joints do not interfere with each other, and a stable and smooth discharge as a downward swirling flow can be maintained. In particular, when the flow rate is high, the energy of the swirling flow increases, and the drainage from the horizontal drawing pipe is sucked downward at the vertical pipe with a sufficient negative pressure, so that no backflow occurs.

In the collective drainage pipe system joint header according to the present embodiment, the communication bases of the horizontal pipe joints 2 a to 2 d with respect to the cylindrical body 1 are arranged adjacently on the circumference at the intermediate height position of the cylindrical body 1. As shown in FIG. 1, even in a limited underfloor space, a small bevel-shaped recessed opening S is formed in the penetrating portion of the floor slab, resulting in a structure having a small height that can be compactly accommodated. It is possible to minimize the space volume required at the junction with the horizontal drawing pipe.

FIG. 3 is a plan view of the system drain header for the collective drainage pipe according to the second embodiment of the present invention. The difference from the first embodiment of FIG. 1 lies in the direction of the horizontal pipe joint. That is, the cylindrical body 11 of the header according to the second embodiment has two horizontal pipe joints 12a and 12b oriented in the same direction and another two horizontal pipe joints 12c and 12d oriented in a direction orthogonal to these. The other two horizontal pipe joints 12c and 12d are opposite in direction to each other.

Two horizontal pipe joints 12a and 12b facing in the same direction are connected to horizontal drawing pipes 18a and 18b protruding from the wall A, and another horizontal pipe joint 12c is connected from another wall B perpendicular to the wall A. It is connected to the protruding horizontal drawing tube 18c. Further, the horizontal pipe joint 12d, which is opposite to the horizontal pipe joint 12c, is a spare joint. When not used, the horizontal pipe joint 12d is closed by a lid when not used. It is connected to the horizontal drawing pipe 18 d via an elbow pipe 19.

The configuration other than the above, including the communication structure between each horizontal pipe joint and the cylindrical main body 11, is the same as that of the first embodiment, and the state of the merge of the drainage is also the same.

It is to be noted that each of the above-described embodiments merely shows a typical embodiment of the present invention, and that modifications obvious to those skilled in the art belong to the technical category of the present invention. Should be.

[0027]

[Effect of the invention]

 As described above, in the joint drainage pipe system joint header according to the present invention, at least two or more of the horizontal pipe joints to be connected are connected to the horizontal draw pipe, respectively. Since the connecting ends are oriented in the same direction as each other, many mid- and high-rise buildings project the pipe ends in the same direction from the wall into the open pipe space facing the outside of the open corridor. In order to connect the horizontal pipe joint to the horizontal pipe end, the protruding length of each horizontal pipe should be adjusted to the position of the header and the pipe end should be subjected to joint processing. For example, flange joints, screw joints, socket joints, welded joints, etc. can be selected as appropriate for the connection joint structure between the pipe and the horizontal drawing pipe, and if necessary, accessories such as seal packing and flexible joints cannot be interposed. Even so, The extra bent pipe, such as the elbow into a plurality of lateral pulling tubes have to interposed member topology bulky and dimethyl is essentially useless as come.

Further, in the collective drainage pipe joint header according to the present invention, the plurality of horizontal pipe joints communicate with the inside of the cylindrical body at a downward gradient along the tangential direction of the inner peripheral wall of the cylindrical body. Since they are integrally formed on the peripheral wall of the cylindrical body, the communication bases of all the horizontal pipe joints can be arranged adjacently on the circumference at a certain height position of the cylindrical body. Even if many horizontal pipe joints are provided, a compact header structure with a small height dimension will be achieved, and it is possible to reduce the volume of space required at the junction of the vertical pipe with the horizontal drawing pipe.

Furthermore, in the joint drainage pipe system joint header according to the present invention, since each horizontal pipe joint communicates on the inner peripheral wall surface of the cylindrical body with a downward gradient along the tangential direction, the cylindrical pipe is connected to each horizontal pipe joint. The streamlines of the wastewater flowing into the inside of the cylindrical body follow a downward spiral trajectory that is almost parallel to each other.Therefore, in the inflow part on the inner wall surface of the cylindrical body, the shunts from each horizontal pipe joint interfere with each other. However, it is possible to maintain a stable and stable discharge as a downward swirling flow.

Furthermore, in the collective drainage pipe joint header according to the present invention, a through hole for internal cleaning is provided in the tubular main body at a height position between the upper pipe joint and the base of the horizontal pipe joint. However, since this through-hole is closed by a lid with a transparent window so that it can be opened and closed, it is possible to visually monitor the drainage state of the internal drainage and the presence or absence of foreign matter that hinders the flow through the transparent window. At the time of maintenance work such as internal inspection and cleaning, it is only necessary to remove the lid and open the through hole, and it is almost unnecessary to perform maintenance work by removing one of the horizontal pipes like many conventional system joint headers. Absent.

[Brief description of the drawings]

FIG. 1 is a plan view of a system joint header for a collecting drain pipe according to a first embodiment of the present invention.

FIG. 2 is a front view of the system drain header for the collective drainage pipe according to the first embodiment.

FIG. 3 is a plan view of a system joint header for a collective drainage pipe according to a second embodiment of the present invention.

[Explanation of symbols]

 1: Cylindrical main body 2a to 2d: Horizontal pipe joint 3a: Upper pipe joint 3b: Lower pipe joint 4: Through hole 5: Lid with see-through window 6a to 6d: Connection end 7a: Upper vertical pipe 7b: Lower vertical pipe 88 -8d: horizontal drawing tube

Claims (4)

[Utility model registration claims] 1. A system joint header for a collective drainage pipe interposed between an upper vertical pipe and a lower vertical pipe in a drainage vertical pipe to merge drainage from a plurality of horizontal drawing pipes into the vertical pipe. A cylindrical body having an upper pipe joint connected to the lower end of the upper vertical pipe and a lower pipe joint connected to the upper end of the lower vertical pipe, and a cylindrical main body for connection with the horizontal drawing pipe, respectively. A plurality of horizontal pipe joints integrally formed on the peripheral wall of the cylindrical body so as to communicate with the inside at a downward gradient along the tangential direction of the inner peripheral wall of the cylindrical body, and at least two or more A system drain header for a collecting drain pipe, characterized in that the horizontal pipe joint has connection ends oriented in the same direction as each other for connection with the horizontal drawing pipe. 2. A through hole for internal cleaning is provided in a cylindrical main body at a height position between an upper pipe joint and a base of a horizontal pipe joint,
The system joint header for a collective drainage pipe according to claim 1, wherein the through-hole is closed by a lid with a see-through window so as to be opened and closed. 3. The system joint according to claim 1, wherein all the horizontal pipe joints have connection ends oriented in the same direction for connection with the horizontal drawing pipe. header. 4. A connection end of at least two or more horizontal pipe joints with the horizontal drawing pipe is oriented in the same direction, and a connection end of at least one other horizontal pipe joint with the horizontal drawing pipe is positioned in the same direction. 3. The system joint header for a collective drainage pipe according to claim 1, wherein the header is directed at a right angle to the joint.