JP3317752B2 - Drainage basin - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a drain basin. In particular, it relates to a drainage basin to which a pipe with ribs having a large number of ribs on an outer peripheral surface can be connected.

[0002]

2. Description of the Related Art A drainage basin is provided at a place where the direction of a pipe through which sewage or the like flows to flow, or at a place where it merges.
As described in Japanese Patent Publication No. 12144, an inlet and an outlet are provided in the main body of the basin, and sewage or the like flows in from the inlet and flows out to the outlet. This drainage basin is actually open 5
As described in JP-A-9-29491, a drainage basin made of a synthetic resin (usually made of a PVC resin or a polypropylene resin) is often used. The synthetic resin drainage basin is manufactured by injecting a synthetic resin melted by an injection molding machine into a mold.

[0003] On the other hand, a pipe with a rib is disclosed in Japanese Patent Laid-Open No. 5-048
As described in Japanese Patent Application Publication No. 4 (1999), for example, the outer wall of a synthetic resin pipe is provided with ribs protruding annularly in the circumferential direction, and since the ribs are provided on the outer peripheral surface, the pressure resistance is high, and therefore the same pressure resistance is provided. There is an advantage that the amount of resin to be used is small and inexpensive as compared with a synthetic resin tube having the above. Therefore, the ribbed pipes are gradually used in sewage pipes and the like.

[0004]

However, the amount of ribbed pipes used for drainage pipes and the like is still small. Therefore,
The amount of drainage basin inevitably used for the sewage pipe of this ribbed pipe is small, and it is effective if it is manufactured using an expensive mold with an injection molding machine as in the past, and it becomes effective. No. Thus, the inventor has attempted to apply a conventional synthetic resin drainage basin that has been used in large quantities to this drainage basin for a pipe with ribs. It has been found that connecting the ribbed pipe to a conventional drainage basin has a problem because the pipe has a different thickness and diameter from the ribbed pipe.

[0005] For example, a typical vinyl chloride resin pipe of synthetic resin pipe has a nominal diameter of 200 mm, an inner diameter of 202 mmφ, and an outer diameter of 216 mmφ. Has an inner diameter of 217.3 mm
φ, the inner diameter of the outlet, which is the outlet, is 202 mmφ. Therefore, when a vinyl chloride resin pipe (outer diameter 216 mmφ) is inserted into the receiving port (inner diameter 217.3 mmφ) of the drainage basin, good connection can be achieved without any step. Insertion of drainage basin (inner diameter 20
2 mmφ) and a vinyl chloride resin pipe (inner diameter 202 mmφ) can be connected without a step by expanding the pipe end of the vinyl chloride resin pipe or using a pipe joint in the same manner as a normal vinyl chloride resin pipe.

However, the inner diameter of the pipe with ribs corresponding to the vinyl chloride resin pipe at a nominal diameter of 200 mm is 200 mm.
Since the diameter is φ and the outer diameter is 228.8 mmφ, this ribbed pipe cannot be directly connected to a conventional drainage basin. Furthermore,
The inventor of the present invention tried to connect the pipe with the ribs by expanding or reducing the diameter thereof.However, a step was formed at the connection between the pipe with the rib and the outlet or the inlet of the drainage basin, and the step was caused by the sewage. It has been found that there is a problem that the waste accumulates and microorganisms multiply and the flow gradually deteriorates. Accordingly, an object of the present invention is to provide an inexpensive ribbed pipe drainage basin capable of processing a conventionally used drainage basin and connecting the ribbed pipe without any step.

[0007]

DISCLOSURE OF THE INVENTION The present invention has been made to achieve the above-mentioned object, and has an inflow port, an outflow port and an upward cleaning port provided between the inflow port and the outflow port. A synthetic resin drainage basin, wherein one end of the synthetic resin short pipe is large enough to insert a ribbed pipe having a large number of ribs on the outer peripheral surface, and the lower inner surface is provided with a rib. The other end of the connection short pipe whose diameter has been increased so as to be reduced by the thickness of the pipe is inserted and connected to the inflow port, and the outflow side of the drainage basin has a ribbed pipe connection short pipe. It is connected to the outlet so that the lower inner surface of the ribbed pipe connection short tube and the lower inner surface of the outlet are substantially equal in height.

The outlet side in the present invention is connected so that the lower inner surface of the rib-connected pipe short pipe and the lower inner surface of the outlet are substantially equal in height. As described above, there are various methods for connecting the lower inner surface of the pipe with a ribbed pipe and the lower inner surface of the outlet so as to have substantially the same height. One end of the pipe with a size large enough to receive the outlet, and the lower side of the short pipe with the rib is enlarged by a distance substantially equal to the lower thickness of the outlet to produce a short pipe with a rib. The outlet of the drainage basin is inserted into the enlarged one end of the connecting short pipe for connection.

Another preferred method is to form a ribbed pipe connecting short pipe without processing the ribbed pipe short pipe, and to form the ribbed pipe connecting short pipe below the inner surface and below the outlet. The inner surface of the pipe is made substantially equal in height, and one end of the pipe connection pipe with ribs abuts against the tip of the outlet, and a thermosetting resin layer is provided on the outer peripheral surface of the abutting portion, and the pipe with pipe with ribs is provided. Connect with connecting short pipe.

[0010]

In the drainage basin for ribbed pipes according to the present invention, the inflow side of the drainage basin has a connection short pipe whose one end part is expanded to a size into which the ribbed pipe can be inserted. Since the connection is made, a ribbed pipe can be inserted into this connection short pipe for connection. In addition, since the lower inner surface of the connecting short pipe is enlarged so as to be reduced in thickness by the thickness of the ribbed pipe, when the ribbed pipe is inserted into this inlet-side connecting short pipe and connected, the lower part of the connecting short pipe is connected. The side inner surface and the lower inner surface of the ribbed pipe have substantially the same height, and there is no step. Note that the connection between the connection short pipe and the inflow port is similar to that in the case where the synthetic resin pipe is connected to the conventional inflow port, so that there is no step. Therefore, the ribbed pipe can be connected so that there is no step on the inflow side.

As described above, since the inlet side can be connected to the lower inner surface so that there is no step, the sewage flowing under the inlet smoothly flows, so that there is no accumulation of dirt or propagation of microorganisms. Further, on the outlet side of the drainage basin, the short pipe with a ribbed pipe is connected to the outlet such that the lower inner surface of the ribbed pipe and the lower inner surface of the outlet are substantially equal in height, There is no step between the lower inner surface of the rib-connected pipe and the lower inner surface of the outlet. Further, the connection between the ribbed pipe connection short pipe and the ribbed pipe on the outlet side is the same as the conventional connection between ribbed pipes, so that connection can be made without any step.

As described above, the outlet side can be connected to the lower inner surface without any step, so that the sewage flowing on the lower side of the outlet flows smoothly, so that there is no accumulation of dirt or propagation of microorganisms. In the present invention, the outlet side of the short pipe with a rib is large enough to receive the outlet at one end of the short pipe with a rib, and the lower side is expanded so as to be substantially equal to the lower thickness of the outlet. When the outlet is inserted and connected in the one end, the lower inner surface of the ribbed pipe short pipe attached to the outlet and the lower inner surface of the outlet are almost at the same height. Become. Therefore, no step occurs in this portion.

In the present invention, one end of the short pipe with a rib is brought into contact with the tip of the outlet such that the lower inner surface of the outlet and the lower inner surface of the ribbed pipe are substantially equal in height. If a thermosetting resin layer is provided on the outer peripheral surface of the contact portion to connect the outlet and the pipe with ribs, the lower inner surface of the outlet and the lower inner surface of the short pipe with ribs are Are connected at approximately equal heights. Therefore, no step occurs in this portion. In the present invention, a drain basin for a ribbed pipe is manufactured by processing a normally used drainage basin as described above, so that the drainage basin for a ribbed pipe of the present invention is inexpensive.

[0014]

Embodiments of the present invention will be described below. FIG. 1 shows an embodiment of the present invention, in which (a) is a plan view of a drainage basin for a pipe with a rib, and (b) is a cross-sectional view cut along line AA. FIG. 2 shows another embodiment of the present invention.
(A) is a plan view of a drainage basin for a pipe with a rib, and (B) is B-
It is sectional drawing cut | disconnected by the B line.

In FIG. 1, reference numeral 1 denotes a drainage basin made of a vinyl chloride resin. The drainage basin 1 includes a basin body 11, an outlet 12, and an inlet 13. The drainage basin 1 is a drainage basin used for a pipe of a vinyl chloride resin pipe. Reference numeral 2 denotes a ribbed pipe connecting short pipe having a large number of annular ribs on the outer peripheral surface made of a vinyl chloride resin attached to the outlet 12 of the drainage basin 1. The ribbed pipe connecting short pipe 2 shortens the ribbed pipe. It is cut and the one end 22 is enlarged in size to allow the outlet 12 to enter. At this time, the lower inner surface of the enlarged one end portion 22 of the ribbed pipe connection short pipe 2 is enlarged by a distance substantially equal to the lower thickness of the outlet 12. Therefore, when the outlet 12 is inserted into and attached to the one end 22 of the ribbed pipe connection short pipe 2 whose diameter is enlarged, the lower inner surface of the ribbed pipe connection short pipe 2 and the lower inner surface of the outlet 12 are connected. And almost the same height.

Reference numeral 3 denotes a connecting short pipe made of vinyl chloride resin attached to the inlet 13 of the drainage basin 1.
In the figure, one end 32 of a short pipe obtained by cutting a vinyl chloride resin pipe into a short length is enlarged to a size that can accommodate a pipe with a rib. At this time, the diameter of the lower inner surface of the connecting short pipe 3 is increased so as to be reduced by the thickness of the ribbed pipe. Therefore, when the ribbed pipe is inserted into the one end portion 32 of the connecting short pipe 3, the lower inner surface of the connecting short pipe 3 and the lower inner surface of the inserted ribbed pipe have substantially the same height. Reference numeral 4 denotes a fiber reinforced thermosetting resin (FR)
P) A reinforcing resin layer reinforced with a layer. 5 is a packing attached to the outer peripheral surface of the pipe connection short pipe 2 with ribs.

Next, a method of manufacturing the drainage basin for a pipe with a rib will be described. A ribbed pipe having an inner diameter of 200 mmφ is cut short, and one end of the cut ribbed pipe is heated and softened. Then, one end of the softened ribbed pipe short pipe is placed in a cylindrical mold with a center axis of 1 mm. It is inserted while being shifted, and the inner diameter is expanded to 228.8 mmφ to manufacture the pipe connection short pipe 2 with ribs.

Next, an adhesive is applied to the enlarged inner surface of the ribbed pipe connection short pipe 2 and the outer peripheral surface of the outlet 12 of the drainage basin 1 to increase the diameter of the ribbed pipe connection short pipe 2. The outlet 12 is inserted into. Then, the pipe connection short pipe 2 with the rib
The lower inner surface of the drainage basin 1 and the lower inner surface of the outlet 12 of the drainage basin 1 have substantially the same height, and it is possible to mount this portion without any step.

Next, a vinyl chloride resin tube having an inner diameter of 202 mmφ is cut short, and one end of the vinyl chloride resin tube is heated and softened. Then, a cylindrical mold is inserted into the softened vinyl chloride resin short tube by a rib. The center axis is shifted by 3.5 mm so as to reduce the thickness by the thickness of the attached pipe.
The connection short pipe 3 is manufactured by expanding the diameter to 0.1 mmφ. Next, an outer peripheral surface of an end of the connecting short pipe 3 opposite to the enlarged end,
An adhesive is applied to the inner peripheral surface of the inflow port 13 of the drainage basin 1, and the opposite end of the short pipe 3 is inserted into the inflow port 13 and bonded.

Then, the connection between the opposite end of the connecting short pipe 3 and the outlet 12 of the drainage basin 1 is the same as the connection between the ordinary vinyl chloride resin pipe and the outlet 12. The inner surface can be connected so that the inner surface of the inflow port 13 of the drainage basin 1 has no step. Thereafter, a thermosetting resin (FRP) is applied to the outer peripheral surface of the connection portion and cured to provide the reinforcing layer 4.

Next, a method of using the drainage basin for a pipe with a rib will be described. The packing 5 is attached to the ribbed pipe connecting short pipe on the outlet 12 side, and this ribbed pipe short pipe 2 is attached.
Insert a pipe with a rib whose one end is enlarged. Then, it is the same as connecting normal pipes with ribs,
Can be connected watertight. Moreover, since the ribbed pipe and the ribbed pipe connection short pipe 2 have the same diameter, the inner surface also has the same height, and no step is formed in this portion. Therefore, the sewage flowing on the lower side does not stagnate, and the sewage in the sewage does not accumulate or the microorganisms do not propagate.

Next, a ribbed pipe is inserted into the connecting short pipe 3 on the inflow port 13 side and attached. Then, connection short pipe 3
Since the lower inner surface of the ribbed pipe is reduced by the thickness of the ribbed pipe, the lower inner surface of the ribbed pipe and the lower inner surface of the connecting short pipe 3 are mounted at substantially the same height, and no step is formed in this portion. . Therefore, even if the sewage flows into the inflow port 13, the sewage flowing below does not stagnate, and the sewage in the sewage does not accumulate or the microorganisms do not propagate.

Next, the embodiment shown in FIG. 2 will be described. The embodiment shown in FIG. 2 is different from the embodiment shown in FIG. 1 in the structure on the outlet side. Therefore, only the outlet side will be described. The ribbed pipe short pipe obtained by cutting the ribbed pipe short is used as the ribbed pipe connection short pipe 2a.
Next, the end face of the pipe connection short pipe 2 a with a rib is connected to the outlet 1.
A thermosetting resin (FRP) layer 6 is provided on the outer peripheral surface of the contact portion between the outlet 12 and the ribbed pipe connection short pipe 2a in a state where the thermosetting resin (FRP) layer 2 is in contact with the end face of the outlet 2 and the two are connected.

At this time, the lower inner surface of the ribbed pipe connecting short pipe 2a and the lower inner surface of the outflow port 12 are made substantially at the same height.
Therefore, no step is formed on the lower inner surface of this portion. next,
When a ribbed pipe is connected to the ribbed pipe connection short pipe 2a on the outlet side, the connection is made between ribbed pipes.
As in the embodiment shown in FIG. 1, the connection can be made without any step. Therefore, the sewage flowing in this portion flows well without stagnation, no accumulation of sewage or propagation of microorganisms.

[0025]

As described above, in the drainage basin for a pipe with a rib according to the present invention, a short pipe connected to a pipe with a rib is attached to an outlet so as not to cause a step on a lower inner surface. Even when the pipe with the rib is attached to the pipe connection short pipe, no step is formed in the connection between the ribbed pipe and the pipe connection with rib and the connection between the pipe with connection rib and the outlet. Therefore, even if sewage flows out from this outlet,
Sewage does not stagnate at this connection, and flows smoothly without accumulation of dirt or propagation of microorganisms.
In addition, since the synthetic resin pipe is cut short and the other end of the connection short pipe whose one end is expanded is attached to the inflow port, there is no step in this connection. Further, since the diameter of the enlarged portion is increased so that the lower surface thereof is substantially equal to the thickness of the ribbed pipe, even if the ribbed pipe is connected to the connecting short pipe, no step is formed in this portion. That is, there is no step in the connection between the inflow port and the connection short pipe and the connection between the connection short pipe and the ribbed pipe. Therefore, even if sewage flows through this inlet,
The sewage does not stagnate, the sewage accumulates, and the microorganisms flow smoothly without propagation.

[0026]

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention, in which (a) is a plan view of a drainage basin for a pipe with a rib, and (b) is a cross-sectional view cut along line AA.

FIG. 2 shows another embodiment of the present invention, in which (a) is a plan view of a drainage basin for a pipe with a rib, and (b) is a cross-sectional view cut along line BB.

[Explanation of symbols]

 Reference Signs List 1 drainage basin 11 basin body 12 outlet 13 inflow 2, 2a ribbed pipe connection short pipe 22 enlarged end 3 connection short pipe 32 enlarged end 4 thermosetting resin layer (reinforcing layer) 5 Packing 6 Thermosetting resin layer (reinforcing layer)

Continuation of the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) E03F 5/10 E02D 29/12 F16L 41/00-41/08

Claims (1)

(57) [Claims] 1. A synthetic resin drainage basin provided with an inlet, an outlet, and an upward cleaning port between the basin main body, wherein the inlet side is a synthetic resin short pipe. The other end of the connecting short pipe whose one end is large enough to insert a ribbed pipe having a large number of ribs on its outer peripheral surface and whose lower inner surface is reduced in diameter by the thickness of the ribbed pipe is the other end. The outlet side of the drainage basin, the ribbed pipe connection short pipe is connected to the outlet at the lower inner surface of the ribbed pipe connection short pipe and the lower inner surface of the outlet. Characterized by being connected so that the heights are substantially equal.