JPH0827883A - Drain - Google Patents

Abstract

(57) [Summary] [Purpose] Even when manufacturing different types of drainage basins,
Provides a drainage basin that does not require the preparation of several large molds as in the past. [Structure] Start-up pipe 1 having receiving port 15a provided above
5 and a pipe connection port 16 connected to the side of the start-up pipe 15
A drainage body 12 having branch pipes 16 and 17 provided with a and 17a is integrally molded of resin, and each branch pipe 16 is provided in a lower opening 15b of a riser pipe 15 of the drainage body 12. , 17 was fitted with the invert 13 having the guide groove 13c continuous.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage basin provided in the middle of piping such as a sewer pipe.

[0002]

2. Description of the Related Art Conventionally, this kind of thing is buried in a confluence point of a drainage pipe, a bending point, a gradient change point, a pipe diameter change point, etc.
The inside of the pipe is inspected and cleaned, for example, as shown in FIG.
Used as shown.

That is, the drainage basin 1 is provided at the bottom,
An inspection cylinder 2 is connected to the drainage basin 1, and a lid 3 is provided on the upper side of the inspection cylinder 2 so that they are buried in the ground.

The drainage basin 1 is connected to a rising pipe 4 having a receiving port 4a provided above and branch pipes 5 and 6 connected to the side of the rising pipe 4 and provided with pipe connecting ports 5a and 6a. And have. The upstream main pipe 7 is connected to the pipe connection port 5a of the upstream branch pipe 5, and the downstream main pipe 8 is connected to the pipe connection port 6a of the downstream branch pipe 6.

In addition, at the bottom of the riser pipe 4, the diameter of the branch pipes 5 and 6 is the same as that of the branch pipes 5 and 6 in order to favorably guide water and the like flowing in from the one branch pipe 5 to the other branch pipe 6. The guide groove 9 is integrally formed.

An example of this type is described in Japanese Utility Model Laid-Open No. 5-89537.

[0007]

However, in such a conventional one, since the entire drainage basin 1 is integrally molded with synthetic resin, the connection angle of the branch pipes 5 and 6 with respect to the start-up pipe 4 is increased. If you want to manufacture a different mold or one in which the second inflow pipe connecting port merges with the invert 9, you must mold the entire drainage basin 1 with a different mold. There is a problem that you have to prepare several types.

Therefore, an object of the present invention is to provide a drainage basin which does not require the preparation of several types of large molds as in the conventional case even when manufacturing different types of drainage basins.

[0009]

In order to solve the above-mentioned problems, the invention described in claim 1 has a rising pipe provided with a receiving port at the upper side, and a pipe connected to the side of the rising pipe. A main body of a drainage muffler having a branch pipe provided with a connection port is integrally molded of resin, and an invert having a guide groove continuous from each branch pipe is formed in a lower opening of a rising pipe of the drainage muffler body. A fitting means is formed between the invert and the drainage trough body, which are fitted to each other and are locked when they are in a fixed positional relationship in a rotation direction about the axis of the rising pipe. The invert has a hollow shape with an opening at the bottom, and the opening is closed by a circular bottom plate for drainage.

The invention described in claim 2 is characterized in that an annular rib that is heat-sealed to the peripheral edge portion of the opening of the invert is formed on the peripheral edge portion of the upper surface of the bottom plate.

The invention according to claim 3 is characterized in that one of the bottom plate and the bottom surface of the guide groove of the invert and the bottom plate are formed with a contact rib for contacting the other.

The invention described in claim 4 is characterized in that the invert is formed of impact-resistant synthetic resin.

[0013]

[Operation] According to the invention described in claim 1, the drain pipe main body having the riser pipe and the plurality of branch pipes and the invert are separately formed, so that the branch pipe is connected to the riser pipe. Even when several types of drainage basins with different angles are manufactured, it is not necessary to prepare a plurality of large-sized molding devices as compared with the conventional one in which they are integrally molded. In other words, if it is attempted to manufacture several types of drainage masts in which the connection angle of the branch pipe to the start-up pipe is different when the drainage muffler is integrated as in the past, one molding machine changes the angle and Since it is necessary to change the shape of the guide groove portion of, the molding is difficult. On the other hand, in the case of manufacturing only the drainage main body, the one that can be molded by one device has been developed even if the connection angle of the branch pipe to the rising pipe is different (see Japanese Patent Application No. 6-154766). ing. Therefore, as in the present invention, if the drainage basin body and the invert are separated, several types of the drainage basin body can be molded with one molding device,
It suffices to prepare only a few compact molding devices for molding several types of inverts. By the way, the one described in Japanese Patent Application No. 6-154766, by changing the position of the mold part forming the branch pipe in the circumferential direction,
Several types of drainage casks with different connection angles of the branch pipe to the start-up pipe can be molded with one molding machine.

Also, by forming a locking means between the invert and the drainage basin body, the invert and the drainage basin body are locked only at one place, so the invert drainage main body Can be securely attached to the position.

Further, by making the invert hollow, it is possible to reduce the weight and to secure the strength by closing the opening of the invert with the bottom plate. In addition, by closing the opening of the invert with the bottom plate, it is not necessary to fill the inside with soil when installing the drainage mast, and it is easy to move laterally, compared to the conventional foot type, Good workability.

According to the second aspect of the invention, in assembling the bottom plate and the invert, the annular rib of the bottom plate is pressed against the peripheral edge portion of the opening of the invert and is heat-sealed by ultrasonic waves or the like. By heat-sealing the annular ribs in this manner, the opening of the invert can be easily closed by the bottom plate.

According to the third aspect of the present invention, since the abutment rib is interposed between the lowest part of the guide groove of the invert and the bottom plate, when a heavy object is dropped on the invert from above. The strength of can be secured.

According to the fourth aspect of the present invention, by forming the invert with the impact resistant synthetic resin, it is possible to secure the strength when a heavy object is dropped on the invert from above.

[0019]

EXAMPLES The present invention will be described below based on examples.

1 to 5 show a first embodiment of the present invention. The same or equivalent members as the conventional ones will be described with the same reference numerals.

First, the structure will be described. In the figure, reference numeral 11 is drainage, and the drainage main body 12, the invert 13, and the bottom plate 1 are provided.
And 4.

The main body 12 for drainage is made of a normal hard vinyl chloride resin having a Charpy impact value of about 4.5 kgf · cm / cm, and a start-up pipe 15 provided with a rubber ring receiving port 15a on the upper side thereof, A branch pipe 16 connected to the side of the riser pipe 15 and provided with pipe connection ports 16a, 17a,
17 and 17. The upstream main pipe is connected to the rubber ring connection port 16a of the upstream branch pipe 16, and the downstream branch pipe 17 is connected to the downstream main pipe.
The rubber ring receiving port of the main pipe on the downstream side is connected to the pipe connecting port 17a (opening). This start-up pipe 15
It is formed in a taper shape with an angle of about 0.5 degrees so that the diameter of the upper portion becomes small. Also, this drainage body 12
1 has a wall thickness of 8 mm and a height H of 360 as shown in FIG.
mm, the total length L is 560 mm, the receiving port 15a has an inner diameter of 300 mm, and the pipe connecting ports 16a and 17a have an inner diameter of 200.
It is about mm.

Further, the invert 13 is a drainage main body 1
It is fitted in the lower opening 15b of the bottom of the tube facing the start-up pipe 15 of No. 2, and hard vinyl chloride resin is compounded with an impact modifier (MBS resin, chlorinated polyethylene).
Charpy impact value at 3 ° C is 20 kgf · cm /
It is made of impact resistant hard vinyl chloride resin of about cm. The invert 13 has a hollow shape, a horizontal cross section is formed in a circular shape, a circular opening 13a is formed in a lower portion, and a flange portion 13b is formed in a peripheral portion of the opening 13a. A guide groove 13c is provided on the upper side of the invert 13. The guide groove 13c has a cross-sectional shape that is continuous from each of the branch pipes 16 and 17, and collects sewage and the like flowing from one branch pipe 16 into the other. In order to favorably guide the branch pipe 17, the inner diameter is set to be the same as the diameter of the branch pipes 16 and 17. Further, as shown in FIGS. 4 and 5, contact ribs 13d are formed on the back surface side of the lowest part of the guide groove 13c along the direction of forming the guide groove 13c. Furthermore, as shown in FIG. 5, the outer peripheral surface of the invert 13 is formed in a taper shape of 0.5 ° in consideration of the mold release property, and a pair of locking projections 13e extending in the vertical direction is formed. Has been formed. As shown in FIG. 4, the locking projections 13e are formed at positions of an angle α with respect to the center line O, and are formed at positions that are line-symmetric with respect to a line P orthogonal to the center line O. There is. Although not shown, the recess into which the locking protrusion 13e is fitted is the drainage main body 1 described above.
It is formed on the lower inner peripheral surface of the second riser pipe 15. The locking projections 13e and the recesses serve as locking means for locking when the drainage body 12 and the invert 13 have a fixed positional relationship in the rotation direction about the axis of the rising pipe 15. It is configured. It does not lock at any other position.

On the other hand, the bottom plate 14 is made of synthetic resin and has a circular shape, and an annular rib 14a that is heat-sealed to the flange portion 13b of the invert 13 by ultrasonic waves is integrally formed on the peripheral edge of the upper surface. When the bottom plate 14 is attached to the invert 13, the invert opening 13a is closed and the contact rib 13 of the invert 13 is formed.
The d contacts the bottom plate 14.

As in the prior art, an inspection tube is connected above the rising pipe 15 of the drainage basin 11, and a lid is arranged above the inspection tube.

According to the drainage basin 11 having such a structure, the drainage basin body 12 having the start-up pipe 15 and the plurality of branch pipes 16 and 17 and the invert 13 are formed as separate bodies. Even when manufacturing several types of drainage basins 11 with different connection angles of the branch pipes 16 and 17,
It is not necessary to prepare a plurality of large molding devices as compared with the conventional one in which molding is performed integrally. In other words, if it is attempted to manufacture several types of drainage masts in which the connection angle of the branch pipe to the start-up pipe is different when the drainage muffler is integrated as in the past, one molding machine changes the angle and Since it is necessary to change the shape of the guide groove portion of, the molding is difficult. On the other hand, in the case of manufacturing only the drainage main body 12, there has been developed what can be molded by one device even if the connection angles of the branch pipes 16 and 17 with respect to the rising pipe 15 are different. Therefore, as in the present invention, the main body 12 for drainage and the invert 13
Since the drainage main body 12 can be molded by several molding devices with one molding device, it is only necessary to prepare several compact molding devices for molding several kinds of inverts 13. Become.

Next, the assembly of the drainage basin 11 will be described.

Assembling the bottom plate 14 and the invert 13
From the state shown in FIG. 5, the annular rib 14a of the bottom plate 14 is pressed against the peripheral edge of the opening 13a of the invert 13 and is heat-sealed by ultrasonic waves. By heat-sealing the annular rib 14a in this way, the opening 13a of the invert 13 is formed in the bottom plate 14.
Can be easily closed. Further, by making the invert 13 hollow, it is possible to reduce the weight, and by closing the opening 13a of the invert 13 with the bottom plate 14, it is possible to secure the strength.

Invert 13 and drainage main body 12
Assembling with the invert 13 is performed by inserting the invert 13 into the lower opening 15b of the rising pipe 15,
3e and the recess on the inner peripheral surface of the lower portion of the riser pipe 15 are locked together, and the invert 13 and the drainage main body 12 are bonded.

In this case, the inversion 13 can be securely attached to the proper position of the main body 12 for draining water, because it is locked only at one position due to the position where the locking projection 13e is formed. Even in the case where the branch pipes 16 and 17 of the drainage main body 12 are formed in a straight line as in this embodiment, the guide groove 13c of the invert 13 has a constant inclination, and therefore the 180 ° mounting position Is different,
Since the slope is reversed, it is necessary to lock only in one place.

In the drainage basin 11 thus formed, the invert 13 is made of a shock-resistant material, and the contact ribs 13d of the invert 13 are in contact with the bottom plate 14. The strength when dropped is secured.

Further, by closing the opening 13a of the invert 13 with the bottom plate 14, when installing the drainage basin 11, compared with the conventional foot type, it is not necessary to fill the inside with soil and the lateral direction Since it is easy to move to, the workability is good.

Furthermore, since an inclined surface is formed on the upper portion of the invert 13 and is formed to a height corresponding to the tops of the branch pipes 16 and 17, dirt is not collected.

Further, FIGS. 6 to 8 show the second embodiment of the present invention.
An example will be described.

The invert 23 is shown in these figures.
In the invert 13 of the above embodiment, the guide groove 13c is provided in a straight line through the center of the invert 13.
The invert 23 of this embodiment is a guide groove 23c on the main pipe side.
And a guide groove 23d on the side of the merging pipe are formed. A contact rib 23e is formed on the back surface side of the guide groove 23c, and as shown in FIG. 7, locking projections 23f are formed at positions of 60 ° and 70 ° with respect to the center line O. Other than that, the invert 23 is formed in a hollow shape and has an opening 23a, and a flange portion 23b is formed at the peripheral edge of the opening 23a, as in the first embodiment.

Although not shown, such an invert 23 is fitted to a drainage body having a pair of branch pipes on the main pipe side and one branch pipe on the confluence pipe side.

The other structure and operation are the same as those of the first embodiment, and the description thereof will be omitted.

Although the embodiment of the present invention has been described with reference to the drawings, the specific configuration is not limited to this embodiment, and there are design changes and the like within a range not departing from the gist of the present invention. However, it is included in the present invention. For example, in the above embodiment, the contact ribs 13 are attached to the inverts 13 and 23.
Although the d and 23e are formed, an abutment rib may be formed on the bottom plate 14 so as to abut on the back side of the lowest part of the guide grooves 13c and 23c. Further, the locking means is the invert 1
Lock projections 13e and 23f are formed on the side of 3, 23, and a recess is formed on the body 12 side for drainage. However, the invention is not limited to this. Of course, the protrusions 13e and 23f may be formed.

[0039]

As described above, according to the invention described in claim 1, by forming the drainage muffler body having the rising pipe and the plurality of branch pipes and the invert separately, Even when several types of drainage basins with different connection angles of the branch pipe to the start-up pipe are manufactured, it is not necessary to prepare a plurality of large molding devices as compared with the conventional one in which they are integrally molded. In other words, if you try to manufacture several types of drainage masts with different connection angles of the branch pipe to the start-up pipe, as in the conventional one in which the entire drainage muffler is integrated,
With a single molding device, the angle must be changed and the shape of the guide groove portion of the invert must be changed, so molding is difficult. On the other hand, in the case of manufacturing only the drainage main body, there has been developed one that can be molded by one device even if the connection angle of the branch pipe to the rising pipe is different. Therefore, if the drainage basin body and the invert are separated as in the present invention, several types of the drainage basin body can be molded with a single molding device, and therefore a small size for molding several types of inverts. It is only necessary to prepare several types of molding equipment.

Further, by forming a locking means between the invert and the drainage basin body, since the invert and the drainage basin body are locked only at one place, the invert is drained. Can be securely attached to the position.

Further, by making the invert hollow, it is possible to reduce the weight and to secure the strength by closing the opening of the invert with the bottom plate. In addition, by closing the opening of the invert with the bottom plate, it is not necessary to fill the inside with soil when installing the drainage mast, and it is easy to move laterally, compared to the conventional foot type, Good workability.

According to the second aspect of the present invention, in assembling the bottom plate and the invert, the annular rib of the bottom plate is pressed against the peripheral edge portion of the opening of the invert and heat-sealed. By heat-sealing the annular ribs in this manner, the opening of the invert can be easily closed by the bottom plate.

According to the third aspect of the invention, since the contact rib is interposed between the lowest portion of the guide groove of the invert and the bottom plate, when an object is dropped onto the invert from above. The strength can be secured.

According to the invention described in claim 4, by forming the invert from the impact resistant synthetic resin, it is practically useful that the strength can be secured when a heavy object is dropped on the invert from above. Be effective.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a drainage basin showing a first embodiment of the present invention.

FIG. 2 is a partially broken perspective view showing the first embodiment.

FIG. 3 is a perspective view of an invert showing the first embodiment.

FIG. 4 is a plan view of an invert showing the first embodiment.

FIG. 5 is a sectional view taken along the line AA of FIG. 4 showing the first embodiment.

FIG. 6 is a perspective view of an invert showing a second embodiment of the present invention.

FIG. 7 is a plan view of an invert showing the second embodiment.

FIG. 8 is a sectional view taken along line BB in FIG. 7 showing the second embodiment.

FIG. 9 is a perspective view showing a conventional example.

[Explanation of symbols]

 11 Drainage drain 12 Drainage drain main body 13,23 Invert 13a, 23a Opening 13c, 23c, 23d Guide groove 13d, 23e Abutment rib 13e, 23f Locking protrusion 14 Bottom plate 14a Annular rib 15 Start-up pipe 15a Receiving port 15b Lower opening Part 16,17 Branch pipe 16a, 17a Pipe connection port

Claims (4)

[Claims] 1. A start-up pipe having a receiving port provided above,
A main body of a drainage muffler having a branch pipe connected to the side of the riser pipe and provided with a pipe connection port is integrally molded with resin, An invert having a continuous guide groove is fitted from each branch pipe, and there is a fixed positional relationship between the invert and the main body of the drainage pipe in the rotation direction about the axis of the rising pipe. The invert has a hollow shape with an opening at the bottom, and the opening is closed by a circular bottom plate for drainage. 2. The drainage according to claim 1, wherein an annular rib that is heat-sealed to the peripheral edge of the opening of the invert is formed on the peripheral edge of the upper surface of the bottom plate. 3. The drainage according to claim 1, wherein one of the bottom surface of the bottom of the guide groove of the invert and the bottom plate is formed with an abutment rib that abuts the other. 4. The drainage according to claim 1, wherein the invert is made of impact resistant synthetic resin.