JPH05179689A - Connection of house-inlet to water feed pipe - Google Patents

Abstract

PURPOSE:To connect a connection end part of a water feed pipe to a house-inlet achieving a high sealability. CONSTITUTION:A member having an integrally moulded ring-like layer 9 having intermediate characteristics between the characteristics of a water feed pipe 2 and the mechanical and physical characteristics of mortar 5 is provided at an outer circumferential part of a sleeve 8 of which mechanical and physical characteristics are the same as or similar to those of the water feed pipe 2 The sleeve 8 is engaged around a connection end part 2a, 2b of the water feed pipe 2 inserted through a sewage inflow space part side large diameter part 3A1, 3B1 of a stepped water feed pipe connection hole 3A, 3B formed through a house-inlet 1, and it is bound by binding agent 10. A resilient seal ring 7 preliminarily engaged around the connection end part 2a, 2b is held and applied by the sleeve 8 and a step surface 3X of the water feed pipe connection hole 3A, 3B, and binding agent 11 is applied to its peripheral parts before or after holding and applying the resilient seal ring 7. The mortar 5 is then charged to a ring-like space 4A, 4B surrounded by an inner circumference of the sewage inflow space part side large diameter part 3A1, 3B1 and an outer circumference of the ring-like layer 9 to be cured and hardened.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of connecting a waste water mass and a water discharge pipe for connecting a water discharge pipe composed of a waste water inflow pipe and a waste water discharge pipe to a waste water mass.

[0002]

2. Description of the Related Art Concrete wastewater mass 1 shown in FIG.
On the other hand, the conventional method of connecting the water flow pipe 2 composed of the waste water inflow pipe 2A and the waste water drain pipe 2B is that the water flow pipe connecting hole 3A formed in the waste water mass 1 is made of a synthetic resin waste water inflow pipe made of vinyl chloride or the like. After inserting the connecting end 2a of 2A, the annular space 4A surrounded by the inner circumference of the water pipe connecting hole 3A and the outer circumference of the connecting end 2a is filled with mortar 5 to cure and solidify. The drainage pipe 2B made of synthetic resin such as vinyl chloride in the water passage connection hole 3B formed in
After inserting the connecting end portion 2b of the above, the annular space 4B surrounded by the inner circumference of the water passage connecting hole 3B and the outer circumference of the connecting end portion 2b.
Is filled with mortar 5 to cure and solidify.

However, the compatibility between the connection ends 2a and 2b of the resin wastewater inflow pipe 2A and the wastewater drainage pipe 2B and the mortar 5 filled in the annular spaces 4A and 4B is poor, and the contact area between them is low. Is small, so the connection end 2
Adhesion of the mortar 5 to the a and 2b is poor, and there is a risk of water leakage from the boundary between the connection ends 2a and 2b and the mortar 5. Further, since the resin-made connecting ends 2a and 2b having a relatively large difference in mechanical and physical characteristics and the mortar 5 directly interfere with each other, the connecting ends 2a, 2b and 5 are thermally expanded and contracted. There are cases where cracks or breaks occur in 2a, 2b, or a gap is created at the boundary between the connection ends 2a, 2b and the mortar 5, causing water leakage. That is, the conventional method for connecting the sewage mass and the water pipe has a drawback of poor sealing property.

[0004]

The problems to be solved are that the connection end of the water pipe and the mortar are not well compatible with each other, so that water may leak from the boundary between the two. Since the two having a relatively large difference in physical characteristics directly interfere with each other, cracks and breaks occur at the connection end, and a gap is created at the boundary between the two, causing water leakage.

[0005]

SUMMARY OF THE INVENTION According to the present invention, a water pipe is attached to a waste water mass having a stepped water pipe connecting hole having a large diameter part on the waste water inflow space side and a small diameter part on the anti-sewage inflow space side. A method of connecting a sewage mass and a water pipe to be connected, comprising: a first step of inserting the connection end of the water pipe into the stepped water pipe connection hole; and elastically connecting the sewage inflow space side to the connection end. A second step of fitting a seal ring onto the stepped surface of the stepped water pipe connecting hole, and the mechanical and physical characteristics of the water pipe are the same or similar to those of the water pipe, and the characteristics and mortar A sleeve in which an annular layer having a characteristic equivalent to that of mechanical and physical characteristics is integrally formed on the outer peripheral portion is externally fitted and adhered to the connecting end portion with an adhesive interposed, and the sleeve is A third step of sandwiching the elastic seal ring with the step surface,
An adhesive applying step of applying an adhesive to the peripheral portion of the elastic seal ring after the second step or the third step;
A fourth step of filling and curing by curing mortar in the annular space surrounded by the inner circumference of the large diameter portion of the stepped water pipe connection hole on the side of the dirty water inflow space and the outer circumference of the annular layer of the outer circumference of the sleeve. And the contact layer between the mortar and the connection end of the water pipe, which has poor compatibility with the annular layer, and the mortar has a relatively large difference in mechanical and physical properties. Therefore, the object of improving the sealing property is achieved by preventing cracks and breaks at the connection end or generation of a gap at the boundary between the connection end and mortar.

[0006]

According to the present invention, the sealing property between the connecting end of the water pipe and the sleeve can be ensured by the adhesive agent interposed therebetween. Further, the sealing property between the sleeve and the stepped surface of the water pipe connecting hole can be secured by the elastic seal ring and the adhesive applied in the adhesive applying step. Further, since the annular layer comes into contact with the mortar, the conformability between the two is improved and the adhesion of the mortar to the annular layer is improved, so that the sealing property of the boundary portion can be enhanced. Moreover,
The annular layer is the mechanical end of the connecting end of the water pipe and the sleeve.
Since it has a property equivalent to the intermediate between the physical property and the mechanical / physical property of mortar, the interference between the thermal expansion / thermal contraction of the connection end of the water pipe and the sleeve and the thermal expansion / thermal contraction of the mortar Will be alleviated. To that end, the connection end and the sleeve
It is possible to surely prevent cracks and breaks in the groove, or formation of a gap at the boundary between the sleeve and the mortar.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. In addition, in the same or corresponding part as the conventional example,
Description will be given by attaching the same reference numerals. FIG. 1 shows a concrete-made wastewater mass 1. Stepped water passage connecting holes 3 are provided on both sides of a lower portion of a peripheral wall thereof for communicating the outside with the wastewater inflow space 6.
A and 3B are formed so as to have a horizontal axis. The stepped water pipe connection holes 3A, 3B are provided on the side of the large diameter portions 3A1, 3B1 on the side of the sewage inflow space and on the side of the large diameter portions 3A1, 3B1 on the side of the sewage inflow space which are continuous with the stepped surface 3X. It has small diameter portions 3A2 and 3B2. Further, the large diameter portions 3A1 and 3B1 on the sewage inflow space portion side are the sewage inflow space portion 6
The taper surface is formed so as to have a narrower diameter toward the side, and its peripheral surface is formed as a taper surface that is inclined toward the side of the dirty water inflow space 6.

First, as shown in FIG. 2, the connecting end portion 2a of the resin waste water inlet pipe 2A such as vinyl chloride is inserted into the stepped water pipe connecting hole 3A. Next, as shown in FIG.
An elastic seal ring 7 made of a ring made of rubber and having a hollow portion in the circumferential direction is externally fitted to the connection end portion 2a from the sewage inflow space portion 6 side to form the stepped water pipe connecting hole 3A. It contacts the step surface 3X. On the other hand, a member having an annular layer 9 formed on the outer circumference of the sleeve 8 shown in FIGS. 4 and 5 is prepared. The sleeve 8 is molded from a synthetic resin such as vinyl chloride having the same mechanical and physical characteristics as the sewage inflow pipe 2A, has a flange 8A formed at one end, and the outer circumference of the body 8B. Ribs 8b, 8b extending in the axial direction are provided so as to project at two locations in the direction. In addition, these ribs 8
b and 8b are not always necessary. The ring-shaped layer 9 is a material in which sand or pebbles are bonded by using an adhesive as a binder, that is, a mechanical property which is intermediate between the mechanical and physical properties of the sleeve 8 and the mechanical and physical properties of the mortar described later. -Body part 8B made of a material with physical properties
Is integrally formed with a uniform thickness on the entire outer periphery of the.

As shown in FIG. 6, after the adhesive 10 is applied to the surface of the connection end portion 2a of the dirty water inflow pipe 2A, the sleeve 8 is fitted onto the connection end portion 2a and is appropriately attached to the step surface 3X side. The sleeve 8 is pressed and held, and the sleeve 8 is adhered to the connection end portion 2a. As a result, the elastic seal ring 7 is sandwiched and elastically deformed by the axially outer end surface of the flange 8A of the sleeve 8 and the step surface 3X of the water pipe connecting hole 3A. Then, the elastic seal ring 7
Adhesive 11 is applied to the peripheral portion of the elastic seal ring 7
And the adhesiveness between the sleeve 8 and the step surface 3X of the water passage connecting hole 3A is enhanced. The operation of applying the adhesive 11 is
It may be performed immediately after the elastic seal ring 7 is externally fitted to the connecting end portion 2a. After the adhesives 10 and 11 have been dried and solidified, as shown in FIG. 7, the inner periphery of the large diameter portion 3A1 of the stepped water passage connecting hole 3A and the large diameter portion 3A1 and the sleeve.
One of the water pipes 2 to the stepped water pipe connection hole 3A of the sewage mass 1, that is, sewage The connection of the inflow pipe 2A is completed. In addition,
Water pipe 2 for stepped water pipe connection hole 3B of sewage mass 1
The other side, that is, the connection of the wastewater drainage pipe 2B (see FIG. 8) is
The description is omitted because it is performed in the same process as the stepped water pipe connecting hole 3A. In the figure, 12 is an invertor.
Indicates the

As described above, the connection end portion 2 of the wastewater inflow pipe 2A is
The sealing property between the sleeve 8 and the connection end 2b of the drainage pipe 2B and the sleeve 8 can be secured by the adhesive 10 interposed between the two 2a, 2b and 8. Further, the sealing property between the sleeve 8 and the step surface 3X of the water passage connecting holes 3A and 3B is an elastic seal.
It can be secured by the ring 7 and the adhesive 11 applied in the adhesive applying step. Further, since the annular layer 9 formed on the outer peripheral portion of the sleeve 8 comes into contact with the mortar 5, the conformability between the both 8 and 9 is improved and the adhesion of the mortar 5 to the annular layer 9 is improved. Boundary sea
It is possible to improve the property. Moreover, since the annular layer 9 has characteristics equivalent to those between the mechanical / physical characteristics of the connection ends 2a and 2b and the sleeve 8 and the mechanical / physical characteristics of the mortar 5, the connection ends are The interference between the thermal expansion / contraction of the portions 2a and 2b and the sleeve 8 and the thermal expansion / contraction of the mortar 5 is reduced. Therefore, it is possible to reliably prevent cracks and breaks in the connection ends 2a and 2b and the sleeve 8 or to form a gap at the boundary between the sleeve 8 and the mortar 5 to improve the sealing property. it can. Further, the annular space 4A surrounded by the inner circumference of the large diameter portion 3A1 of the stepped water pipe connection hole 3A and the outer circumference of the annular layer 9 on the outer circumference of the sleeve 8 is filled with mortar 5 and solidified. By doing so, the elastic seal ring 7 is sandwiched between the axially outer end surface of the flange 8A of the sleeve 8 and the step surface 3X of the water passage connecting hole 3A, and the sealing performance such as sealing performance due to elastic deformation is Can be maintained and secured in the connected state. Particularly, in the above embodiment, the large diameter portion 3 on the sewage inflow space side.
Since the peripheral surfaces of A1 and 3B1 are formed as tapered surfaces that are inclined toward the sewage inflow space 6 side, the inner circumference of the sewage inflow space side large diameter part 3A1 and the annular layer of the sleeve 8 outer circumference are formed. The solidified mortar 5 existing in the annular space 4A surrounded by the outer periphery of 9 is reliably maintained in the annular space 4A. Further, in the above-described embodiment, the elastic seal ring 7 is described as a ring made of rubber and having a hollow portion in the circumferential direction, but the elastic seal ring 7 exhibits sealing property by elastic deformation. The material and the structure thereof are not limited as long as they can be processed.

[0011]

As described above, according to the present invention, the sealing property between the connecting end portion of the water pipe and the sleeve is secured by the adhesive agent interposed therebetween, and the sleeve and the water pipe connecting hole are provided. The sealing property between the step surfaces of the mortar is secured by the elastic seal ring and the adhesive applied in the adhesive applying step, and the good compatibility between the annular layer formed on the outer peripheral portion of the sleeve and the mortar is ensured. This improves the adhesion of the mortar to the annular layer and enhances the sealing property at the boundary between the annular layer and the mortar, and also the mechanical and physical characteristics of the annular layer, that is, the connecting end and the slip of the water pipe. -By the characteristic equivalent to the intermediate between the mechanical and physical characteristics of mortar and the mechanical and physical characteristics of mortar,
The interference between the thermal expansion / contraction of the connection end and the sleeve and the thermal expansion / contraction of the mortar is relaxed, and the connection end and the sleeve are cracked or fractured or the gap between the sleeve and the mortar is separated. Since it is possible to reliably prevent the occurrence of the above, it is possible to significantly improve the sealing property as compared with the conventional water pipe connecting method.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of a sewage mass.

FIG. 2 is an enlarged cross-sectional plan view showing a state in which a connection end portion of a wastewater inflow pipe is inserted into a stepped water passage connection hole.

FIG. 3 is an enlarged transverse plan view showing an externally fitted state of the elastic seal ring.

FIG. 4 is an enlarged vertical side view of a sleeve having an annular layer formed thereon.

5 is a sectional view taken along the line AA in FIG.

FIG. 6 is an enlarged cross-sectional plan view showing an outer fitting state of the sleeve.

FIG. 7 is an enlarged cross-sectional plan view showing a state in which the connection of the dirty water inflow pipe is completed.

FIG. 8 is a vertical cross-sectional side view showing a connection state according to a conventional connection method.

[Explanation of symbols]

 1 Sewage mass 2 Water pipe 2A Sewage inflow pipe 2a Sewage inflow pipe connection end 2B Sewage drainage pipe 2a Sewage drainage pipe connection end 3A, 3B Stepped water passage connection hole 3A1, 3B1 Sewage inflow space side large diameter part 3A2, 3B2 Anti-sewage inflow space side small diameter part 3X Step surface 4A, 4B Annular space 5 Mortar 6 Wastewater inflow space 7 Elastic seal ring 8 Sleeve 9 Annular layer 10 Adhesive 11 Adhesive

Claims (1)

[Claims] 1. A sewage mass for connecting a sewage pipe and a sewage pipe to a sewage mass having a stepped sewage pipe connection hole having a large diameter part on the sewage inflow space side and a small diameter part on the anti-sewage inflow space side. In the connection method, a first step of inserting the connection end of the water pipe into the stepped water pipe connection hole, and an elastic seal ring is externally fitted from the sewage inflow space side to the connection end. A second step of contacting the stepped surface of the stepped water pipe connecting hole with a mechanical / physical property which is the same as or similar to that of the water pipe, and the mechanical property of the mortar and the mechanical property of the mortar. A sleeve in which an annular layer having an intermediate characteristic is integrally formed on the outer peripheral portion is externally fitted and adhered to the connection end portion with an adhesive interposed, and the elastic seal is formed between the sleeve and the step surface. A third step of sandwiching a ruling and the bullet after the second or third step. Adhesive application step of applying an adhesive to the peripheral portion of the flexible seal ring, the inner circumference of the large diameter portion of the stepped water pipe connecting hole side on the sewage inflow space side and the outer circumference of the annular layer of the sleeve outer peripheral portion. A fourth step of filling a mortar in an annular space surrounded by and curing and solidifying the mortar, and a connecting method of a wastewater mass and a water pipe.