JPH0649536U - Box body for underground burial - Google Patents

Abstract

(57) [Summary] [Purpose] Regarding the improvement of the water blocking structure when connecting pipes to the inflow and outflow holes of the underground burying box body for sewage masses, manholes, etc. By installing a dedicated water stop fitting to the inflow hole and outflow hole of the box body, it is easy to insert and install the pipe body and it is possible to reliably prevent water leakage between the pipe body and the outflow hole or inflow hole after attachment. An object is to provide a box body for underground burying excellent in water effect. A ring body (2) having an inward flange portion (3a) at one end of at least one of an inflow hole (9) and an outflow hole (10) of a box body for underground burial such as a sewage mass, and By providing the water stop joint (1) composed of the entire inner peripheral surface of the ring body (2) and the tubular elastic body (4) covering at least a part of the outer peripheral surface of the other end, the box body is provided with the waterproof joint. The structure is such that the pipe body (11) is connected via the water joint (1).

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a box body for underground burial such as a sewage mass or a manhole, and its main purpose is to improve a water blocking structure when connecting a pipe body to an inflow hole or an outflow hole of the box body.

[0002]

[Prior art]

 Conventionally, when the drain pipe 13 is attached to the inflow hole 9 and the outflow hole 10 in this kind of underground burying box body, for example, in a sewage mass as shown in FIG. 6, while attaching a drainage gradient to the drain pipe 13. , One end side of which is inserted into the inflow hole 9 and the outflow hole 10, and then the space between the inflow hole 9 and the outflow hole 10 and the outer circumference of the drainage pipe 13 is filled with mortar or the like to seal the groundwater and the like. It was intended to prevent invasion into the pipe and leakage of extraneous water such as dirty water and gray water. Further, there is also one in which a joint 14 as shown in FIG. 7 is attached to the inflow hole 9 or the outflow hole 10 in order to obtain a water blocking effect with the drain pipe.

[0003]

[Problems to be solved by the device]

 However, it has been extremely difficult to fill the gap with mortar or the like and to completely seal the gap between the two due to the synergistic effect of the incompatibility between the tube and the mortar. In particular, during long-term use, groundwater and miscellaneous water intrude from the connection between the two due to imperfections in the seals, which causes an unnecessary amount of wastewater to flow to the drain pipe side, increasing the amount of sewage treatment. That is a very serious problem.

Further, when the drainage pipe is inserted into the inflow hole and the outflow hole, the wastewater mass is made of concrete and the drainage pipe is long. Displacement occurred and the insertion of the drainage pipe became an eccentric insertion, destroying the periphery of the inflow hole and outflow hole, which further weakened the water blocking effect between the two. In addition, the joint system shown in FIG. 7 has a poor adhesive force between the joint 14 made of an elastic body and the concrete, and since the joint 14 is made of an elastic material, when the mold and the concrete are demolded at the time of molding, When transporting, or when inserting a drainage pipe, the joint 14 separates and displaces at the interface 15 with the concrete, and a gap is created at that location, or the concrete is broken, resulting in poor water-stopping performance. Had.

In any case, it was not possible to obtain a good water blocking effect with the conventional connecting structure.

Therefore, the present invention makes it easy to insert and mount the pipe body by mounting the water shut-off joint for the box body for underground burial such as this kind of wastewater mass into the inflow hole and the outflow hole of the box body. This is the development of a box body for underground burying that has an extremely excellent water-blocking effect that can reliably prevent water leakage between the later pipe body and the outflow hole or inflow hole.

[0007]

[Means for Solving the Problems]

 The present invention provides a ring body having an inward flange at one end in at least one of an inflow hole or an outflow hole of a box body for underground burial such as a sewage mass, an entire inner peripheral surface of the ring body, and at least the other end. By providing a water stop joint composed of a tubular elastic body formed by partially breaking the outer peripheral surface, the tube body can be connected to the box body via the water stop joint.

[0008]

[Action]

 Since the present invention is constructed as described above, the water shutoff joint 1 is integrally formed on the inflow hole 9 side and the outflow hole 10 side of the wastewater mass 8 as shown in FIG.

In this state, when the tip end portion of the pipe body 11 is inserted into the tubular elastic body 4 of the water shutoff joint 1, the tip end portion of the elastic body 4 covering the inward flange portion 3 a of the ring body 2. It is locked to the portion 4f.

In this locked state, when tightened with the tightening band 12 fitted on the water shutoff joint 1, the pipe 11 is reliably connected to the water shutoff joint 1.

Therefore, in the box body for underground burial of the sewage mass or the like, the inflow hole 9 and the outflow hole 10 and the water shutoff joint 1 are reliably integrated, and the water shutoff joint 1 and the pipe body 11 are connected. Since it is connected in a water-stopped state, external groundwater and miscellaneous water will not enter the wastewater mass and the pipe body, and leakage of sewage water from the pipe side can be reliably blocked, resulting in a water-stopping effect. It works extremely well.

[0012]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a vertical cross-sectional view of a sewage mass 8 as an example of a box body for underground burying. A water shutoff joint 1 is integrally attached to each of an inflow hole 9 and an outflow hole 10 of the sewage mass 8. Become.

FIG. 2 is a half cross-sectional view of the water shutoff joint 1. In FIG. 2, 2 is a cylindrical ring body having an inverted T-shaped half cross-section, the ring body 2a made of an iron plate and the collar 3 made of stainless steel. And the flange portion 3 is composed of an inward flange portion 3a and an outward flange portion 3b.

Reference numeral 4 has a notch 4a into which the tip side of the ring body 2a is fitted, and the inner leg 4b is formed in a substantially L shape so as to be in close contact with the entire inner peripheral surface of the ring body 2. However, it is a rubber-made cylindrical elastic body having a body 4e formed by forming a protruding anchor portion 4b on the outer peripheral edge of the lower end of the outer leg portion 4c, and further extending upward. It is baked on the ring body 2.

Reference numeral 5 denotes a concave portion formed on the outer peripheral surface of the body portion 4e of the cylindrical elastic body 4, and reference numeral 6 denotes four protrusions provided on the inner peripheral surface side of the concave portion 5. Reference numeral 7 denotes three ridges protruding from the inner peripheral surface of the inner leg 4b.

When the water shutoff joint 1 shown in the above embodiment is attached to the wastewater mass 8, for example, when the wastewater mass 8 is molded, the water shutoff joints are respectively provided on the inflow hole 9 side and the outflow hole 10 side of the form. By arranging 1 and pouring concrete into the mold, a wastewater mass 8 as shown in FIG. 1 is molded.

The water shutoff joint 1 is securely and closely attached to the inflow hole 9 side and the outflow hole 10 side of the wastewater mass 8 thus formed.

Moreover, since concrete is poured up to the position shown in FIG. 2 (shown by the broken line) when the wastewater mass 8 is formed, the body 2a made of an iron plate that barely appears on the outer periphery of the ring body 2 is attached to the concrete. Due to the force of attachment, the water stop joint 1 will be attached to the concrete in a very good condition.

Further, since the outward flange portion 3b of the ring body 2 and the anchor portion 4d of the outer leg portion 4c are embedded in the concrete, the mounting state of the water shutoff joint 1 is further ensured.

Next, when the pipe body 11 is inserted into the water shut-off joint 1 in the state of FIG. 1, the pipe body 11 is inserted against the plurality of ridges 6 and 7, and the tip end portion of the inner leg portion 4b is inserted. Since the step portion 4f comes into contact with the step portion 4f, and the step portion 4f is provided on the inward flange portion 3a of the ring body 2, the step portion 4f is prevented from being deformed and the tip of the tube body 11 is securely attached. Will be locked in. Further, due to the presence of the collar portion 3a, the adhesiveness to the concrete is perfect and no cracks or gaps are generated at the interface.

Next, after the tube body 11 is inserted, a commercially available ring-shaped tightening band 12 is externally fitted onto the concave portion 5 of the elastic body 4 and tightened, and as shown in FIG. The pipe body 11 is securely fastened to the water shutoff joint to be connected and fixed.

When the sewage mass 8 is constructed in this manner, the connection portion between the inflow hole 9 and the outflow hole 10 of the sewage mass 8 and the outer peripheral surface of the water shutoff joint 1, and the outer circumference of the water shutoff joint 1 and the pipe body 11. Since the connecting portions between the surfaces are completely connected and connected in a water-stopped state, groundwater and miscellaneous water do not enter the wastewater mass 8 and the pipe 11, and the wastewater etc. Therefore, no water leaked, and the problem caused by the increase and decrease of sewage as in the past was eliminated.

In the above embodiment, the ring body 2 is integrally formed in an inverted T shape, but the ring body 2 has a substantially L-shaped half-section cross section in which at least the inward flange portion 3a is projected. I wish I had it. However, the inward flange 3a may be integrally formed with the ring body 2a or welded separately.

Further, the outward flange portion 3b may be separately attached to the ring body 2 as shown in FIG.

Further, the ring body 2 has a main body 2a made of iron and a collar portion 3 made of stainless steel. However, the ring body 2 may be entirely made of stainless steel, and any material may be used as long as it is made of metal.

Further, in the above-mentioned embodiment, the tubular elastic body 4 is made of rubber, but any material may be used as long as it is an elastic material. The shape of the anchor portion 4d on the outer periphery and the protrusion on the inner peripheral surface is not limited.

In the above-mentioned embodiment, the sewage mass having the inflow hole and the outflow hole as the underground burying box body is explained. For example, as shown in FIG. 5, the inner bottom surface has a hemispherical shape. The box body can be formed and provided with only the outflow hole 10, and the name and shape are not limited as long as it is a box body for underground burying such as a manhole.

[0028]

[Effect] As described above, the present invention is a box body for underground burying with a dedicated water stop joint, so that the water stop joint is attached to the inflow hole and the outflow hole of the sewage mass, etc. In addition to facilitating the work of connecting the pipes, leakage of water between the pipes and joints after connection and intrusion of external groundwater etc. can be reliably prevented, and the water blocking effect becomes extremely remarkable.

[0029] As a result, it is possible to prevent destruction and damage of the pipe connection portion such as the sewage mass, which is a concrete product generated when the conventional concrete product is connected to the pipe body. It was also possible to reliably prevent an increase in the amount of sewage treatment that occurred.

Further, as described in the examples, an outward anchor portion is formed on the outer peripheral surface of the tubular elastic body, or an outward flange portion is formed on the ring body so that the waterproof joint and the concrete product can be connected to each other. The effect of making the fixation even more reliable was obtained.

Further, there is an effect that the sealing property between the pipe body and the joint can be enhanced by forming a small ridge on the inner peripheral surface of the tubular elastic body and tightening the tightening band.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a sewage mass with a water shutoff joint attached.

FIG. 2 is a cross-sectional view of a water shutoff joint.

FIG. 3 is a vertical cross-sectional view of a sewage mass in a state where a pipe is connected to a water shutoff joint.

FIG. 4 is a half cross-sectional view showing another embodiment of the ring body.

FIG. 5 is a vertical cross-sectional view of a sewage mass as another example.

FIG. 6 is a half cross-sectional view of a sewage mass showing a conventional example.

FIG. 7 is a sectional view of an essential part of a joint showing a conventional example. DESCRIPTION OF SYMBOLS 1 ... Water stop joint 2 ... Ring body 2a ... Ring body main body 3a ... Inward flange 4 ... Cylindrical elastic body 4a ... Notch 4b ... Inner leg 4c ... Outer leg part 4d ... Anchor part 8 ... Sewage mass 9 ... Inflow hole 10 ... Outflow hole 11 ... Tubular body 12 ... Tightening band

Claims (4)

[Scope of utility model registration request] 1. A ring body (2) having an inward flange portion (3a) at one peripheral edge of at least one of an inflow hole (9) and an outflow hole (10) of a box body for underground burial such as a sewage mass. And a tubular elastic body (4) covering at least a part of the outer peripheral surface of the other end of the ring body (2) and the inner surface of the ring body (2). A box body for underground embedding, which has a structure in which a pipe body (11) is connected through the water shutoff joint (1). 2. One end of the ring body (2) has a substantially inverted T half-section.
The underground burying box body according to claim 1, which is in the shape of a letter. 3. A utility model in which a plurality of small ridges (6) and (7) are formed on the inner surface side of a tubular elastic body (4) and a tightening band (12) is mounted on the outer surface side. A box body for underground burying according to claim 1. 4. The box body for underground embedding according to claim 1, wherein an outward anchoring portion (4d) is projected on the outer peripheral surface of the tubular elastic body (4).