JP2848728B2 - Drainage equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage device, and more particularly to a drainage device provided in a middle-to-high-rise building.

[0002]

2. Description of the Related Art Generally, a drainage device installed in a middle-to-high-rise building is ideally constituted by a single vertical pipe piped vertically from the top floor to the bottom floor. It is very difficult to lay the pipe straight because of the difference in the room divisions, and in that case, the vertical pipe will be piped with offset. Therefore, the drainage device in the middle- and high-rise building is composed of vertical pipes that are arranged vertically offset, and horizontal pipes that are horizontally or downwardly inclined connecting these vertical pipes. , And a bent pipe connecting the horizontal drawing pipe and the vertical pipe. The sewage and drainage discharged from each level is discharged to a sewer pipe, a sewage pipe, and the like via a vertical pipe, a bent pipe, and a horizontal pipe.

[0003] In the present invention, the horizontal drawing pipe includes not only a pipe arranged in a horizontal direction but also a pipe arranged inclining down to about 45 degrees.

[0004]

By the way, when a large amount of drainage flows through the inside of a vertical pipe at one time, when the direction is changed by the bent pipe, the pipe collides with the bent pipe and jumps up to block the inside. Before and after this blockage, the air layer in the drainage device becomes disconnected, and the inside of the pipe becomes positive pressure or negative pressure. As a result, traps of various sanitary kitchen appliances connected to the drainage device break, causing odor in the pipe. However, there is a problem that the water flows back into each room.

[0005] Further, when the turbulent drainage collides with the bent pipe and jumps up and flows into the horizontal draw pipe, the flow velocity becomes slower than that of the vertical pipe, causing stagnation of the flow and reducing the ventilation space. . Then, when the flow reaches the bent pipe while the stagnation flow is generated and the flow is converted in the vertical direction, the flow collides with the inner surface of the bent pipe and closes the inside thereof. When the drainage device is blocked by the drainage, the trap is broken, and as described above, the odor in the pipe flows backward into the room.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has been made to reduce the change in the flow rate of drainage in a horizontal drawing pipe and to reduce the flow rate of a drainage pipe or a vertical pipe from a vertical pipe or a horizontal pipe through a bent pipe. It is an object of the present invention to provide a drainage device that rectifies drainage so as to prevent blockage when draining the drainage to a pipe.

[0007]

A first drainage device according to the present invention comprises a vertical pipe, a horizontal pipe, and a drainage pipe connected between the vertical pipe and the horizontal pipe to drain water from the vertical pipe. A drain device having a bent pipe leading to a pipe, wherein the vertical pipe is formed in a circular cross section,
Further, the horizontal pipe is formed so as to be tapered from both sides thereof to the bottom of the pipe, and the bent pipe has the same cross-sectional shape as the vertical pipe and is connected to a vertical pipe connection section which is connected to the vertical pipe, and a horizontal pipe. From the vertical pipe connection to the horizontal pipe connection, the inner surface on the large diameter side of the bending radius gradually tapers. It is characterized by being formed in.

A second drainage device according to the present invention is provided with a horizontal pipe, a vertical pipe, and a bend connected between the horizontal pipe and the vertical pipe to guide drainage from the horizontal pipe to the vertical pipe. A drain pipe provided with a pipe, wherein the horizontal pipe is formed so as to be tapered from both sides to the bottom of the pipe, a vertical pipe is formed in a circular cross section, and a bent pipe is the same as the horizontal pipe. And a vertical pipe connecting part having the same cross-sectional shape as the vertical pipe and communicating with the vertical pipe. The inner surface on the smaller diameter side of the bending radius is gradually formed from a tapered shape to a circular shape from the portion to the vertical pipe connection portion.

[0009]

[Function] The drainage that has flowed down from the vertical pipe to the curved pipe collides with the inner surface on the large diameter side of the bending radius that gradually becomes tapered in the curved pipe, energy is lost, and the water is rectified without rising to the upper space. Being leaked. The drain water that has reached the horizontal drawing pipe is rectified without increasing stagnation due to the increased flow velocity since the inner surface of the pipe bottom is tapered. Furthermore, when the rectified drainage reaches the bent pipe from the horizontal drawing pipe, it flows down to the vertical pipe along the small diameter side inner surface of the bent pipe that gradually becomes tapered and has a circular shape. It is prevented from leading to the tube and rising to its upper space.

As a result, when draining water from a vertical pipe to a horizontal pipe through a curved pipe, or from a horizontal pipe to a vertical pipe through a curved pipe, the upper space is secured and adverse effects such as blockage are prevented. No change is caused, and the flow rate can be rectified to a small change and smoothly guided.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIG. 1 and FIG.
Is a vertical pipe 2 disposed vertically in each level of the building, a horizontal pipe 3 disposed in a horizontal direction of the building, and a vertical pipe 2 and a horizontal pipe 3 between the vertical pipe 2 and the horizontal pipe 3. And a bent pipe 4 to be provided.

The vertical pipe 2 is formed in a circular cross section, and has a flange 2A at its lower end. In addition, horizontal drawing pipe 3
Is a pipe bottom 3a, a pipe top 3b, and these pipe bottoms 3a.
And side portions 3c, 3c which are connected between the pipe top 3b and the pipe top 3b. The radius of curvature of the tube bottom side inner surface 30a is formed smaller than the radius of curvature of the tube top side inner surface 30b, and the tube bottom side inner surface 30a and the tube top side inner surface 30b are bent to form side taper surfaces 30c, 30b. The portions are connected at 30c to form a substantially oval cross section (see FIG. 3A). A flange 3A is provided at the end.

On the other hand, the bent pipe 4 is formed to be curved so as to continuously change the outflow direction by 90 degrees from the vertical direction to the horizontal direction from the lower end of the vertical pipe 2 to the end of the horizontal drawing pipe 3. A vertical pipe connecting portion 41 having a circular cross section connected to the end on the connection side with the pipe 2; a horizontal drawing pipe connecting portion 42 having a substantially oval cross section connected to the connecting end with the horizontal drawing tube 3; It has. Vertical pipe connection 41
Is provided with a flange 41A that can be connected to a flange 2A provided at the lower end of the vertical pipe 2 formed in a cylindrical shape,
In addition, the laterally drawn tube connecting portion 42 is provided with a flange 42A that can be connected to the flange 3A provided at the end of the laterally drawn tube 3 having a substantially oval cross section.

The bent pipe 4 has a large-diameter side (hereinafter, referred to as an outer diameter portion) 4a having a bending radius continuous with the bottom 3a of the horizontal drawing pipe 3 and a bending section continuous with the top 3b of the horizontal drawing pipe 3. It has a smaller diameter side (hereinafter referred to as an inner diameter portion) 4b and side portions 4c, 4c connecting the outer diameter portion 4a and the inner diameter portion 4b. The radius of curvature of the outer diameter side inner surface 42a in the horizontal drawing pipe connecting portion 42 is formed smaller than the radius of curvature of the inner diameter side inner surface 42b, and the outer diameter side inner surface 42a and the inner diameter side inner surface 42b are bent from the tapered surface. Side inner surfaces 42c, 42c. Accordingly, the outer diameter side inner surface 42a and the inner diameter side inner surface 42
b, the side inner surfaces 42c, 42c are respectively a tube bottom side inner surface 30a, a tube top side inner surface 30b, and a side inner surface 30c, of the horizontal drawing tube 3.
Continuing with 30c, the horizontal pipe connecting portion 42 of the bent pipe 4 and the horizontal pipe 3 have the same cross-sectional shape. In addition, from the vertical pipe connecting portion 41 to the horizontal drawing pipe connecting portion 42, the vertical pipe connecting portion 41 having a circular cross section shown in FIG. 3B is replaced with a horizontal drawing pipe connecting portion having a substantially oval cross section shown in FIG. The gap between the inner surface of the outer diameter portion 4a and the inner surface of the inner diameter portion 4b is gradually increased so as to be continuous with the cross-sectional area at 42, and both side portions 4c, 4c
Are formed so that the distance between the inner surfaces of the first and second surfaces gradually decreases.

That is, the bent pipe 4 is connected to the vertical pipe connecting portion 41.
In an arbitrary cross section of the central portion in the axial direction sandwiched between the horizontal pipe connecting portions 42, the radius of curvature of the inner surface of the outer diameter portion 4a is formed smaller than the radius of curvature of the inner surface of the inner diameter portion 4b. The radius of curvature of the inner surface of the diameter portion 4a and the inner surface of the inner diameter portion 4b is formed so as to be gradually smaller than the radius of curvature of the circular shape in the vertical pipe connection portion 41, and from the vertical pipe connection portion 41 to the horizontal drawing pipe connection portion 42, It is formed of a continuous curved surface so as to approach the same oval cross section as the horizontal drawing tube 3 from the same circular cross section as the vertical tube 2.

The bent pipe 4 is composed of a vertical pipe 2 disposed vertically in each level of the building and a horizontal pipe 3 disposed in each level of the building horizontally or downwardly inclined. The flange 41A of the vertical pipe connection portion 41 of the bent pipe 4 is connected to the flange 2A of the vertical pipe 2, and the flange 42A of the horizontal pipe connection portion 42 of the bent pipe 4 is connected to the horizontal pipe 3. The drainage device 1 is configured by connecting to the flange 3A.

Next, the operation of the drainage device 1 configured as described above will be described. The drainage flowing down into the vertical pipe 2 is:
Since the flow is straightened by colliding with the inner surface of the outer diameter portion 4a, which gradually tapers in the bent tube 4, the cross section is guided to the horizontal drawing tube 3 at a speed higher than that of the circular pipe. It does not rise to the inner surface. The drainage flowing down into the horizontal drawing pipe 3 is rectified by colliding with each other at a tapered pipe bottom side inner surface 40a, and its flow velocity is increased as compared with a circular pipe, so that the flow velocity is reduced. The change becomes small, and the drainage water flows out smoothly without stagnation of the drainage pipe 3.

Therefore, the drainage water flows down in the bent pipe 4 and the horizontal drawing pipe 3 with an air layer always present at the upper portion thereof, thereby preventing the generation of a negative pressure or positive pressure fluctuation in the pipe. In addition to this, it is possible to reduce the change in the flow velocity and at the same time rectify the flow.

In this embodiment, the bent pipe 4 for guiding the drainage from the vertical pipe 2 to the horizontal pipe 3 has been described, but the same applies to the bent pipe 4 for guiding the horizontal pipe 3 to the vertical pipe 2. be able to. In this case, the bent pipe 4 is connected so as to be continuous from the horizontal drawn pipe connection section 42 having the same oval cross section as the horizontal drawn pipe 3 to the vertical pipe connection section 42 having the same circular cross section as the vertical pipe 3. What is necessary is just to form so that the inner surface of the small radius side of a bending radius becomes gradually thicker.

Further, the horizontal drawing tube 3 has a cross section formed in a substantially oval shape. However, it is sufficient that the tube bottom side inner surface 30a is tapered, and the horizontal drawing tube 3 has a cross section as shown in FIG. It may be a tube. In this case, it is necessary that the laterally drawn pipe connecting portion 41 of the bent pipe 4 be formed to have the same cross-sectional shape as the cross-sectionally drawn tube 3.

Further, a bent pipe 4 for guiding drainage between the vertical pipe 2 and the horizontal drawing pipe 3 may be used. In addition to the elbow, a TY joint as shown in FIG. It can also be applied to joints.

Also, the diameters of both ends of the bent pipe need not be the same. However, making the diameter on the outflow side smaller than the diameter on the inflow side is not usually performed because it adversely affects the flow.

[0024]

As described above, according to the present invention, the bent pipe has a vertical pipe connecting portion formed in a circular shape corresponding to the circular cross section of the vertical pipe, and a tapered horizontal drawing from both sides to the bottom of the pipe. It consists of a horizontal drawn pipe connecting part formed in a cross-sectional shape that matches the pipe, and the inner surface on the larger radius side of the bending radius or the inner surface on the smaller diameter side of the bending radius of the bent pipe that is continuous with the inner surface on the bottom side of the horizontal drawn tube, Since it is formed so as to gradually approach the cross-sectional shape at the horizontal pipe connecting part from the cross-sectional shape at the vertical pipe connecting part, drainage from the vertical pipe to the horizontal pipe, or from the horizontal pipe to the vertical pipe, The flow rate can be reduced and the flow can be rectified and guided at the same time, and the pipe can be prevented from being blocked by the drainage. As a result, the inside of the pipe is always in communication with the air layer, the pressure does not fluctuate in the drainage device, and the trap in the drainage device can be reliably prevented from being broken.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a main part of a drainage device of the present invention.

FIG. 2 is a front view showing a part of FIG.

FIG. 3 is a cross-sectional view of a horizontal pipe connection portion of a bent pipe, a horizontal pipe connection, and a vertical pipe connection portion of a bent pipe and a vertical pipe.

FIG. 4 is a cross-sectional view illustrating another cross-sectional shape of the horizontal drawing tube.

FIG. 5 is a front view showing an example of a bent pipe for guiding drainage from a horizontal drawing pipe to a vertical pipe, in which a TY joint is partially broken.

[Explanation of symbols]

 Reference Signs List 1 drainage device 2 vertical pipe 3 horizontal drawing pipe 3a pipe bottom 3b pipe top 3c side 4 bent pipe 41 vertical pipe connecting section 42 horizontal drawing pipe connecting section 4a outer diameter section (larger radius side of bending radius) 4b inner diameter section (bending) 4c side part

Claims (2)

(57) [Claims] 1. A drainage device comprising a vertical pipe, a horizontal drawing pipe, and a curved pipe connected between the vertical pipe and the horizontal drawing pipe to guide drainage from the vertical pipe to the horizontal drawing pipe. The vertical pipe is formed to have a circular cross section, the horizontal pipe is formed to be tapered from both sides to the bottom of the pipe, and the bent pipe has the same cross sectional shape as the vertical pipe and communicates with the vertical pipe. Vertical pipe connection part, and a horizontal pipe connection part having the same cross-sectional shape as the horizontal pipe and communicating with the horizontal pipe. From these vertical pipe connection parts to the horizontal pipe connection part, bending is performed. A drainage device characterized in that the inner surface on the larger diameter side is gradually tapered. 2. A drainage device comprising a horizontal drawing pipe, a vertical pipe, and a curved pipe connected between the horizontal drawing pipe and the vertical pipe to guide drainage from the horizontal drawing pipe to the vertical pipe. The laterally drawn tube is tapered from both sides to the bottom of the tube, the vertical tube is formed to have a circular cross section, and the bent tube has the same cross sectional shape as the horizontal drawn tube. And a vertical pipe connection section having the same cross-sectional shape as the vertical pipe and communicating with the vertical pipe. From the horizontal pipe connection section to the vertical pipe connection section, bending is performed. A drainage device characterized in that the inner surface on the smaller diameter side is gradually formed from a tapered shape to a circular shape.