JPH0914558A - Pipe joint device for connecting sewerage earthenware pipes and synthetic resin pipe - Google Patents

Abstract

PURPOSE: To provide a pipe joint device capable of connecting sewerage earthenware pipes to a synthetic resin pipe. CONSTITUTION: A downstream joint member 10 molded out of a synthetic resin has an outer diameter fitted to an upstream socket 2 of a sewerage earthenware pipe 1 and an inner diameter into which a downstream connection end part of a synthetic resin pipe 5 is inserted. A stopper protrusion part 11 of locking the downstream connection end part of the synthetic resin pipe 5 is formed in an internal peripheral surface of the downstream joint member 10, and also an annular packing receiving protruded part 13 for locking an upstream end part of a bonded packing 12 in the external peripheral surface is protrusively provided. Accordingly, the packing 12 is surely fitted between the earthenware pipe 1 and the downstream joint member 10, and even when a dimensional error exists in the inner diameter of the socket 2 of the earthenware pipe, the socket 2 of the earthenware pipe 1 and the downstream connection end part can be liquid-tightly connected, so that the synthetic resin pipe 5 can be surely and easily connected to the earthenware pipe 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe joint for connecting sewage porcelain pipes and synthetic resin pipes for connecting porcelain pipes such as porcelain pipes and fume pipes to synthetic resin pipes such as vinyl chloride resin pipes. Regarding the device.

[0002]

2. Description of the Related Art Recently, as a pipe material for sewerage, vinyl chloride pipes have been widely used instead of ceramic pipes such as ceramic pipes and fume pipes, but ceramic pipes are also used.
Generally, a sewer pipe is constructed from a trunk line that uses a large-diameter pipe, and it is general that sewer pipes are sequentially buried in narrow roads.The sewer pipes buried in relatively narrow roads mainly have a nominal diameter of 300 mm. The following small caliber tubes are used. And when burying sewer pipes, manholes for inspection must be installed at necessary places, but water pipes and gas pipes are buried on the road, and electric pipes, snow melting pipes, etc. are buried. In some cases, it is difficult to install large manholes on narrow roads.

[0003]

Therefore, recently, on roads where large manholes cannot be installed, small manholes made of vinyl chloride have come to be used, but since they cannot be connected to ceramics, Large manholes must be installed in the ceramics installed on narrow roads,
Installation was difficult.

The present invention has been made in view of the above problems, and connects ceramic pipes to a synthetic resin pipe such as a vinyl chloride resin such as a manhole for connecting sewer pipes for sewerage and a synthetic resin pipe. Pipe fitting device.

[0005]

According to a first aspect of the present invention, there is provided a pipe joint device for connecting sewage porcelain pipes and synthetic resin pipes to each other.
A cylinder made of synthetic resin having an outer diameter that fits into the upstream receptacle of a ceramic pipe such as a sewer pipe or fume pipe for sewerage, and an inner diameter into which the downstream connection end of the synthetic resin pipe is fitted. -Shaped downstream side joint member and a packing fitted and bonded to the outer peripheral surface of the downstream side joint member, and the downstream side connecting end portion of the synthetic resin pipe is engaged with the inner peripheral surface of the downstream side joint member. And a ring-shaped packing receiving projection that locks the upstream end of the packing is provided on the outer peripheral surface and is fitted to the downstream side of the outer peripheral surface of the downstream joint member. The upstream end of the combined packing is engaged with the packing receiving projection to adhere the packing to the downstream joint member, and the downstream joint member is provided in the upstream receiving port of the sewer pipe. The outer circumference of the Combined, in which the downstream-side connecting end portion of the synthetic resin tube fitted on this downstream-side joint member abuts against the stopper protrusion adhering the synthetic resin tube on the downstream side joint member.

According to a second aspect of the present invention, there is provided a pipe joint device for connecting a sewer pipe for sewage and a synthetic resin pipe, wherein an inlet having an inner diameter fitted to a downstream side insertion port of the sewage pipe is upstream side. An upstream joint member made of a synthetic resin formed at the end portion, and a packing fitted and bonded to the inner peripheral surface of the upstream joint member,
At the inner end of the receiving port of the upstream side joint member, an annular locking step for locking the end of the insertion port of the sewerage pipe is formed, and at the middle of the inner peripheral surface of the receiving port. A packing fitting portion having an annular packing receiving step portion on the end side is formed, and the packing receiving portion is engaged with the downstream end portion to fit the packing to the upstream joint member. Adhering, inserting the upstream side joint member into the insertion port of the sewerage pipes through the packing to the packing fitting portion, and connecting the synthetic resin pipe to the downstream side of the upstream side joint member. is there.

The pipe joint device for connecting the sewer pipes for sewage and the synthetic resin pipe according to the third aspect of the present invention is the first or second aspect.
In the pipe joint apparatus for connecting the sewer pipes for sewage and the synthetic resin pipe described above, the synthetic resin pipe is a connecting pipe portion of the manhole.

[0008]

In the pipe joint device for connecting the sewer pipes for sewage and the synthetic resin pipe according to the first aspect of the invention, the upstream end of the packing previously fitted to the outer peripheral surface of the downstream joint member is formed into an annular packing. Adhesive with the receiving projection engaged. Then, the upstream side receptacle of the sewer pipe for sewerage is fitted to the outer peripheral surface of the downstream side joint member. At this time, since the upstream end of the packing engages with the annular packing receiving protrusion, the packing is not moved by pressing force when the ceramics are fitted, and the packing is securely connected to the downstream of the ceramics. It is fitted between the joint member and the inner diameter of the receiving end of this pottery tube has low dimensional accuracy, and even if there is a dimensional error in the inner diameter of the receiving end, the receiving end of the pottery tube and the downstream connecting end Is liquid-tightly connected.

Further, by inserting a synthetic resin pipe into the downstream joint member and adhering the downstream connecting end portion of the synthetic resin pipe to the annular stopper protrusion, the synthetic resin pipe is adhered to the downstream joint member. The tubes are connected liquid-tightly.

According to a second aspect of the present invention, there is provided a pipe joint device for connecting a sewer pipe for sewage and a synthetic resin pipe. Is adhered while being engaged with the packing receiving step portion.
Then, the upstream joint member is fitted into the downstream insertion port of the sewer pipes. At this time, the downstream side of the packing fitted to the inner peripheral surface of the upstream joint member is engaged with the packing receiving step portion, and the packing is securely moved without being moved by pressing force when fitting the ceramics. Is fitted between the pottery tubing and the upstream joint member, and the inner diameter of the receiving end of this pottery tubing has low dimensional accuracy. The receiving port and the upstream joint member are liquid-tightly connected.

In the pipe joint device for connecting the sewer pipe for sewerage and the synthetic resin pipe according to the third aspect of the present invention, the synthetic resin pipe is used as the connecting pipe portion of the manhole, so that the manhole and the ceramic pipe are connected. You can easily.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of one embodiment of a pipe joint device for connecting a sewer pipe for sewage and a synthetic resin pipe of the present invention will be described with reference to FIGS.

Reference numeral 1 denotes a ceramic pipe for sewer such as a ceramic pipe or a fume pipe, which is formed in a receiving port 2 on the upstream side and an insertion port 3 on the downstream side. Packing 4a, 4b molded in a ring shape with urethane rubber or the like is fitted and adhered to the inner peripheral surface of the receptacle 2 and the outer peripheral surface of the insertion port 3 of the ceramic tube 1 respectively.

Reference numeral 5 denotes a synthetic resin pipe such as a vinyl chloride resin pipe, which has an inner diameter capable of being fitted into the receptacle 2 of the ceramics 1.

Reference numeral 10 denotes a tubular downstream joint member, which is made of a synthetic resin such as vinyl chloride in a tubular shape and has an outer diameter to be fitted into the upstream receptacle 2 of the sewer pipe 1 for sewerage. It has an inner diameter into which the downstream connection end of the synthetic resin pipe 5 is fitted. An annular stopper protrusion 11 for locking the downstream connecting end of the synthetic resin pipe 5 is formed at the downstream end of the inner peripheral surface of the downstream joint member 10, and an annular stopper projection 11 is formed on the outer peripheral surface. An annular packing receiving projection 13 that locks the upstream end of the packing 12 is provided at the intermediate portion.

The packing 12 is made of urethane rubber or the like in a ring shape, and is fitted and adhered from the downstream side of the outer peripheral surface of the downstream side joint member 10, and the upstream end of the packing 12 is provided with a packing receiving projection. It is fixed while being engaged with 13.

Then, the outer circumference of the downstream joint member 10 is fitted into the upstream receiving port 2 of the sewer pipe 1 by way of a packing 12 adhered to the outer peripheral surface thereof, and the downstream joint member
The downstream side connecting end of the synthetic resin pipe 5 fitted in 10 is bonded and fixed in a state of being in contact with the stopper projection 11.

The synthetic resin pipe 5 is formed of a connecting pipe portion on the outflow side of a small manhole body 15 molded of a synthetic resin such as vinyl chloride resin, and the small manhole body 15 has synthetic resin at both ends of the invert portion 16. Connection pipes 5 and 6 as pipes are formed, and an inspection port receptacle 17 is formed on the upper surface in a substantially cylindrical shape. The lower end of the inspection port pipe 18 is fitted into the inspection port receptacle 17, and the inspection port pipe 18 is liquid-tightly connected by the packing 19 mounted inside the inspection port receptacle 17. Further, an inspection lid (not shown) is openably and closably attached to the upper end of the inspection port tube 18, and a manhole lid is openably and closably attached to a protective frame located above the inspection port tube 18. Is held flush with the ground plane.

The connection pipe portion 6 on the inflow side of the small manhole body 15 is formed in a spherically bulged receiving port 20, and the outer peripheral surface of the receiving port 20 is aligned with the inner peripheral surface of the receiving port 20. A spherical adapter 21 is rotatably fitted. This adapter 21 has a connection hole having substantially the same inner diameter as that of the connection pipe portion 6.
A rubber packing 24, 25 is fitted on the outer peripheral surface and the inner peripheral surface of the adapter 21, and the adapter 21 and the receiving port 20 are liquid-tightly connected by the packing 24 on the outer peripheral surface. , Connection hole by packing 25 on the inner peripheral surface
The upstream side joint member 30 fitted in 23 is liquid-tightly connected.

The upstream side joint member 30 is molded with a synthetic resin such as vinyl chloride resin.
The receiving port 31 fitted into the downstream insertion port 3 of the sewer pipe 1 for sewer is formed to have an enlarged diameter at the upstream end.

At the inner end of the receiving port 31 of the upstream joint member 30, an annular locking step portion 32 for locking the end of the insertion port 3 of the sewer pipe 1 for sewer is formed. A packing fitting portion 34, which has an annular packing receiving step portion 33 on the inner end side, is formed in the intermediate portion of the inner peripheral surface of the receiving port 31 so as to have an enlarged diameter.

An annular packing formed of urethane rubber or the like, which is fitted with the downstream end of the packing receiving step portion 33 of the packing fitting portion 34 of the receiving port 31 of the upstream side joint member 30, is fitted. 35 is adhered, and the upstream side joint member 30 fitted with the packing 35 is inserted into the insertion port 3 of the sewer pipe 1 for sewerage, and is attached to the synthetic resin pipe 6 on the downstream side of the upstream side joint member 30. The adapter 21 is inserted and connected in the connection hole 23. The adapter 21 is rotatably fitted and connected to the receiving port 20 of the connecting pipe portion 6.

Next, the operation of this embodiment will be described.

In advance, the packing 12 fitted to the outer peripheral surface of the downstream joint member 10 is adhered by engaging the upstream end with the annular packing receiving projection 13. In this state, the downstream joint member 10
The upstream receiving port 2 to which the packing 4a of the sewer pipe 1 is fitted and adhered is fitted to the outer peripheral surface of the. At this time, packing 12
Since the upstream end of the is engaged with the annular packing receiving projection 13, the packing 12 is not moved by the pressing force when the ceramics 1 is fitted, and the packing 12 is securely 1
And the downstream joint member 10 is held in a fitted state. Packing 12 bonded to the outer peripheral surface of the downstream joint member 10
Is liquid-tightly joined to the packing 4a fitted into the receptacle 2 of the pottery 1 and the inner diameter of the receptacle 2 of the pottery 1 has low dimensional accuracy. Even if there is an error, the receptacle 2 of the pottery 1 and the downstream connecting end 10 are liquid-tightly connected.

Further, the synthetic resin pipe 5 which is the outflow side connecting pipe portion of the small manhole body 15 is inserted into the downstream joint member 10 so that the downstream connecting end portion of the synthetic resin pipe 5 is an annular stopper projection.
The synthetic resin pipe 5 is liquid-tightly connected to the downstream joint member 10 by locking and adhering to 11.

Further, the downstream side of the packing 35 fitted in the packing fitting portion 34 on the inner peripheral surface of the upstream joint member 30 in advance is engaged with the packing receiving step portion 33 so that the upstream joint member 30 and the packing 35. Are bonded, and the downstream side of the upstream joint member 30 is fitted and inserted into the adapter 20 fitted to the connecting pipe portion 6. In this state, connect the upstream joint member 30 to the sewer pipes 1
The packing 4b of 1 is fitted into the downstream insertion port 3 adhered to the outer peripheral surface. At this time, the downstream side of the packing 35 fitted to the inner peripheral surface of the upstream joint member 30 is engaged with the packing receiving step portion 33, and the packing 35 is moved by the pressing force when the ceramics 1 is fitted. Without fail, it surely contacts the packing 4b adhered to the insertion port 3 of the ceramics 1 and both packings 4b and 35 are the ceramics 1
And the upstream joint member 30. The inner diameter of the insertion port 3 of the pottery tube 1 has low dimensional accuracy, and even if there is a dimensional error in the outer diameter of the insertion port 3, the pottery tube 1 The insertion port 3 of 1 and the upstream joint member 30 are liquid-tightly connected.

In the above-mentioned embodiment, the upstream joint member 30 and the connecting pipe portion serving as the synthetic tree pipe on the inflow side of the small manhole body 15 are separately formed, but as shown in FIG. It is also possible to integrally form the upstream joint member 30 and the inflow side connection pipe portion of the small manhole body 15.

In this structure, the upstream joint member 30 and the connecting pipe portion on the inflow side of the small manhole body 15 are formed with the same inner diameter, and other structures are exactly the same.

Further, in the above-mentioned embodiment, the connection pipe portion on the inflow side of the small manhole main body 15 was described as a synthetic resin pipe, but it is not limited to the small manhole main body 15 and the connection between the ceramics pipe 1 and the simple synthetic resin pipe. You can also

[0030]

According to the first aspect of the present invention, the upstream end of the packing adhered to the outer peripheral surface of the downstream joint member is engaged with the annular packing receiving projection in advance, and in this state the downstream side is engaged. By fitting the upstream side inlet of the sewer pipes to the outer peripheral surface of the joint member, the packing will not move due to the pressing force when the pipes are fitted, and the pipe pipes and the downstream joint can be securely connected. It is fitted between the members, and even if there is a dimensional error in the inner diameter of the receiving end of this pottery tube, the receiving end of the pottery tube and the downstream connection end can be liquid-tightly connected. The synthetic resin pipe is liquid-tightly connected to the downstream joint member by inserting the synthetic resin pipe into the downstream joint member and locking the downstream connecting end of the synthetic resin pipe to the annular stopper protrusion to adhere it. It is possible to connect the synthetic resin pipe to the ceramic pipe reliably and easily.

According to the second aspect of the present invention, the downstream side of the packing fitted in advance to the packing fitting portion on the inner peripheral surface of the upstream joint member is engaged with the packing receiving step portion and adhered thereto, By fitting the side joint member to the downstream insertion port of the sewer pipe for sewerage, the packing is securely moved between the pottery pipe and the upstream joint member without being moved by pressing force when the pottery pipe is fitted. Even if there is a dimensional error in the inner diameter of the receiving port, the receiving port of the ceramic tubing and the upstream joint member can be liquid-tightly and reliably and easily connected.

According to the third aspect of the present invention, by using the synthetic resin pipe as the connecting pipe portion of the manhole, it is possible to easily connect the ceramic pipe to the synthetic resin manhole.

[Brief description of the drawings]

FIG. 1 is a vertical sectional front view of a pipe joint device for connecting a sewer pipe for sewage and a synthetic resin pipe according to an embodiment of the present invention.

FIG. 2 is a vertical sectional front view of the upstream / downstream side joint member.

FIG. 3 is a vertical sectional front view of the upstream joint member of the above.

FIG. 4 is a vertical sectional front view of a pipe joint device for connecting a sewer pipe and a synthetic resin pipe according to another embodiment of the present invention.

[Explanation of symbols]

1 Sewer ware pipes 2 Upstream side receiving port 3 Downstream side insertion port 5,6 Connecting pipe part of the small manhole body 15 which is a synthetic resin pipe 10 Downstream side joint member 11 Stopper protrusion 12,35 Packing 13 Packing receiving protrusion 30 Upstream side coupling member 32 Locking step section 33 Packing receiving step section 34 Packing fitting section

Claims (3)

[Claims] 1. A tubular downstream molded of synthetic resin having an outer diameter fitted to an upstream receptacle of a sewerage pipe and an inner diameter into which a downstream connection end of a synthetic resin pipe is fitted. A side joint member and a packing fitted and bonded to the outer peripheral surface of the downstream side joint member, and an annular shape for locking the downstream side connecting end of the synthetic resin pipe to the inner peripheral surface of the downstream side joint member. And a ring-shaped packing receiving projection that locks the upstream end of the packing is formed on the outer peripheral surface of the downstream joint member and is fitted to the downstream side of the outer peripheral surface of the downstream joint member. The upstream end of the packing is engaged with the packing receiving projection to bond the packing to the downstream joint member, and the outer periphery of the downstream joint member is attached to the upstream receiving port of the sewer pipe for sewerage. Fit it through the packing that is fitted and adhered to the outer peripheral surface, and A ceramic pipe for sewerage, characterized in that a downstream side connection end of the synthetic resin pipe fitted into a flow side joint member is brought into contact with the stopper projection to bond the synthetic resin pipe to the downstream side joint member. A pipe joint device that connects to a synthetic resin pipe. 2. An upstream joint member made of a synthetic resin having an inner diameter receiving end formed at its upstream end portion, which is fitted into a downstream insertion opening of a sewer pipe for sewerage, and an inner circumference of the upstream joint member. A packing that is fitted and adhered to the surface, and an annular locking step portion that locks the end portion of the insertion port of the sewer pipe for sewerage is formed at the inner end of the receiving port of the upstream joint member. A packing fitting portion having an annular packing receiving step portion on the inner end side is formed at an intermediate portion of the inner peripheral surface of the receiving port, and the downstream end portion is locked to the packing receiving step portion. Then, the packing is fitted and adhered to the upstream side joint member, and the upstream side joint member is inserted into the insertion port of the sewerage ceramics pipe through the packing at the packing fitting portion. Sewer pipes and synthetic trees characterized by connecting a synthetic resin pipe on the downstream side of the A pipe joint device that connects to a fat pipe. 3. A pipe joint device for connecting a sewer pipe for sewerage and a synthetic resin pipe, wherein the synthetic resin pipe is a connection pipe portion of a manhole.