JP6585900B2 - Sewage drainage system - Google Patents

Description

  The present invention relates to a drainage system.

  Conventionally, for example, a drainage system is installed in a house such as a detached house or an apartment house. Such a drainage system includes, for example, a drainage pipe such as a toilet pipe connected to a discharge port of a drainage device such as a toilet, a drainage pipe connected to another drainage device, and the like.

  In recent years, there has been a problem that due to energy saving movements such as water saving in toilets, the amount of water for transporting filth decreases, filth remains in the pipe, and the pipe is blocked.

  For example, Patent Document 1 (Japanese Patent Laid-Open No. 2013-204363) mainly describes a high-performance drainage system that can be installed in a narrower space and can obtain higher drainage performance (conveyance performance). A drainage system to be obtained is disclosed.

  The drainage system described in Patent Document 1 (Japanese Patent Application Laid-Open No. 2013-204363) is blocked by partially draining the interior between the drainage device and the drainage basin or drainage vertical pipe. A drainage pipe provided with a blocking prevention mechanism capable of preventing the occurrence of negative pressure upstream from the portion is connected.

JP 2013-204363 A

  According to said patent document 1, it discloses about the improvement of the conveyance property of waste_water | drain. However, the drainage horizontal pipe arranged with a gradient of 1/5 or less has not been clarified as a method for improving the transportability.

  The objective of this invention is providing the drainage system which can concentrate waste_water | drain, suppressing the energy fall of the waste_water | drain in a drainage horizontal pipe.

(1)
A drainage system according to one aspect is a drainage system disposed with a gradient of 1/5 or less, and includes a drainage horizontal pipe and a reduced diameter portion obtained by reducing the inner diameter of the drainage horizontal pipe.

In this case, since the drainage system includes a drainage horizontal pipe and a reduced diameter part obtained by reducing the inner diameter of the drainage horizontal pipe, the area of the bottom inside the pipe flowing through the drainage horizontal pipe is reduced. As a result, it is possible to concentrate the waste water while suppressing the energy reduction of the waste water.
Note that the gradient of 1/5 means that the distance H in the vertical direction with respect to the predetermined distance L on the horizontal plane is 1/5. That is, when the distance L is 1000 mm, the distance H is 200 mm. In other words, the gradient is 20% or less in terms of a display method such as road railway.

(2)
In the drainage system according to the second aspect of the present invention, in the drainage system according to one aspect, the reduced diameter portion may be formed inside the side to which the joint having the bent portion connected to the drainage horizontal pipe is connected.

  In this case, since the reduced diameter portion is formed inside the side where the joint having the bent portion is connected, the drainage can be efficiently concentrated on the joint having the bent portion.

(3)
A drainage system according to a third aspect of the present invention is the drainage system according to the second aspect of the present invention, wherein the reduced diameter portion may be formed such that the shaft core is eccentric to the side where the bending radius of the joint is large.

In this case, since the reduced diameter portion is formed eccentric to the side where the bending radius of the joint is large, it is possible to increase the centrifugal force and suppress the energy reduction of the drainage.
In particular, since the shaft core is formed eccentric to the side with the larger bending radius, the liquid flowing through the reduced diameter portion is given to the side with the larger bending radius of the joint, so that the energy of the liquid can be maintained efficiently. . For example, when the curvature radius is given to the side where the radius of curvature is small, the collision of the liquid occurs, and the energy of the liquid decreases. However, in the present invention, the reduction of the energy can be prevented.

(4)
A drainage system according to a fourth aspect of the present invention is the drainage system according to the third aspect of the present invention from one aspect, wherein the reduced diameter portion may smoothly reduce the inner diameter of the drainage horizontal pipe.

In this case, since the reduced diameter portion is smoothly reduced in diameter with respect to the axial direction of the inner diameter of the drainage horizontal pipe, it is possible to suppress a reduction in energy of the drainage.
The smooth diameter reduction means that the cross section may be reduced by a straight line or a curved line.
The diameter of the reduced diameter portion is preferably in the range of 30% to 99%, more preferably 50% to 95%, relative to the diameter of the tube. When the diameter of the reduced diameter part is less than 30% of the pipe diameter, the pipe becomes full due to drainage, and the sealed water is broken. I can't.

It is a schematic diagram which shows the drainage system in a toilet. It is a schematic diagram which shows the see-through | perspective from the upper direction of the drainage system in a toilet. It is a typical sectional view showing an example of a drainage system. It is a typical perspective view for demonstrating the structure of a drainage system. It is a schematic diagram for demonstrating the effect of the drainage system which concerns on this invention. It is a schematic diagram for demonstrating the effect of the conventional drainage horizontal pipe. It is a typical structure figure showing other examples of the structure of a drainage system. It is a figure which shows the result of an Example and a comparative example.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same parts are denoted by the same reference numerals. Their names and functions are also the same. Therefore, detailed description thereof will not be repeated.

<Overview>

FIG. 1 and FIG. 2 are schematic diagrams when the drainage system 100 according to the present embodiment is applied to a toilet of a detached house.
FIG. 1 is a schematic diagram showing a drainage system 100 in a toilet, and FIG. 2 is a schematic diagram showing a perspective view of the drainage system 100 in the toilet from above.

1 and 2 includes a bending joint 130 from the toilet 300, a drainage system 100, a bending joint 140, and a pipe 150 on the downstream side .

One end side of the drainage system 100 is connected to the bending joint 130, and the other end side of the drainage system 100 is connected to the bending joint 140. A downstream pipe 150 is disposed downstream of the bending joint 140.
In the present embodiment, the drainage system 100 will be described. The drainage system 100 is arranged with a gradient of 1/5 or less.

<Structure of drainage system>
3 is a schematic cross-sectional view showing an example of the drainage system 100, and FIG. 4 is a schematic perspective view for explaining the structure of the drainage system 100. As shown in FIG.

As shown in FIGS. 3 and 4, the drainage system 100 includes a drainage horizontal pipe 110 made of a tubular member having a cylindrical longitudinal direction, and a reduced diameter portion 120.
That is, as shown in FIGS. 3 and 4, the drainage system 100 includes a drainage horizontal pipe 110 having a constant radius R1 and a reduced diameter portion 120 whose inner diameter changes to a minimum radius R2 (R1> R2).
Therefore, the drainage system 100 is formed such that the inner diameter thereof changes from the radius R1 to the radius R2 (R1> R2) on the side where the bending joint 140 is connected. As a result, the inner diameter axis T1 is formed so as to smoothly change to the inner diameter axis T2.

<Flow effect of drainage system 100>
FIG. 5 is a schematic diagram for explaining the effect of the drainage system 100 according to the present invention, and FIG. 6 is a schematic diagram for explaining the effect of the conventional drainage horizontal pipe 900.

  As shown in FIG. 6, the liquid FL <b> 1 flowing through the conventional drainage horizontal pipe 900 collides with the peripheral surface of the bending joint 140. As a result, the flow velocity energy of the liquid FL1 is reduced due to the turbulent flow caused by the collision.

  On the other hand, as shown in FIG. 5, the liquid FL flowing through the drainage system 100 flows smoothly in the reduced diameter portion 120 and flows smoothly along the peripheral surface of the bending joint 140. As a result, the flow velocity energy of the liquid FL does not collide with the peripheral surface (the side with the larger bending radius) of the bending joint 140 and can be prevented from decreasing.

<Other examples>
FIG. 7 is a schematic structural diagram showing another example of the structure of the drainage system 100.

As shown in FIG. 7, the drainage system 100a includes a drainage horizontal pipe 110a and a piping member 122a.
The drainage horizontal pipe 110a is formed with three projections 115a at the end. The piping member 122a mainly includes a member having the same diameter as the drainage horizontal pipe 110a and a reduced diameter portion 120a. The pipe member 122a is formed with three recesses 125a that can be fitted to the protrusions 115a.

  Further, as shown in FIG. 7, a pipe having the same shape as the drainage system 100 shown in FIG. 3 can be obtained by fitting the drainage horizontal pipe 110 a and the piping member 122 a with the projection 115 a and the recess 125 a. .

  In this embodiment, the drainage system 100a is composed of the drainage horizontal pipe 110a and the piping member 122a. However, the present invention is not limited to this, and a locking portion is formed on the inner diameter of the drainage horizontal pipe 110a. It is good also as a structure which fixes the reduced diameter part 120a to the said latching | locking part.

<Example>
Subsequently, the drainage system 100 according to the present invention and the conventional drainage horizontal pipe 900 were tested. FIG. 8 is a diagram showing the results of Examples and Comparative Examples.

Example 1
In Example 1, the drainage system 100 of FIG. 5 was used. The drainage horizontal pipe 110 and the diameter-reduced part 120 having a diameter of 1/50 and a diameter of 120 are connected to the bending joint 140.

  Specifically, an Slon Clear VP pipe and an Slon DV joint (elbow) of Sekisui Chemical Co., Ltd. were used.

2 liters of water was poured into the long elbow of the drainage system 100, and the distance and water flow of the drained water were measured.
The flight distance was determined by measuring the distance until the pipe end was 0 and the bottom of the drainage horizontal pipe 110 reached 25 cm.

  Moreover, the water force measured the time when a conveyance distance fell to 10 cm, and measured the reciprocal number as a water force.

(Comparative Example 1)
In Comparative Example 1, a conventional horizontal water pipe 900 was used. That is, the drainage horizontal pipe 900 without the reduced diameter part 120 was used.
The others were tested under the same conditions as in Example 1.

In Example 1, the transport distance was 33 cm, the transport residence 10 cm arrival time (sec) was 2.67, and the water force (1 / sec) was 0.37.
In Comparative Example 1, the transport distance was 29 cm, the transport residence 10 cm arrival time (sec) was 3.68, and the water force (1 / sec) was 0.32.

  As a result of comparing Example 1 and Comparative Example 1, it was confirmed that in Example 1, the transportability was improved by 10%. This is an effect of the drainage system 100 of the drainage horizontal pipe 110 having the reduced diameter portion 120.

  Since the drainage system 100 according to the present invention includes the reduced diameter portion 120 in which the inner diameter of the pipe is reduced, the area of the bottom inside the pipe flowing through the drainage system 100 is reduced. Therefore, the waste water can be concentrated while suppressing the energy reduction of the waste water. As a result, high conveyance performance can be obtained in a space-saving manner.

  Further, the reduced diameter portion 120 is formed in an eccentric manner toward the side where the bending radius of the bending joint 140 is large (the circumferential surface of the bending joint 140) on the side connected to the bending joint 140 having the bending portion. It is possible to increase the centrifugal force and suppress the energy reduction of the waste water. As a result, drainage can be efficiently concentrated on the bending joint 140.

  Furthermore, since the diameter-reduced portion 120 is smoothly reduced in diameter with respect to the axial direction of the inner diameter of the drainage horizontal pipe 110 of the drainage system 100, it is possible to suppress a reduction in energy of the drainage.

  The drainage system 100 can be used as long as it is a drainage system (drainage horizontal pipe) on the upstream side of the joint having a bent portion. The drainage system 100 is not limited to a toilet, but includes a wash basin, a bathtub, a kitchen, a washing machine, and the like. The present invention can be applied to a detached house, a condominium, an apartment, an apartment house, a factory, a company building, or any other drainage system.

  In the present invention, the drainage systems 100 and 100a correspond to “drainage systems”, the drainage horizontal pipes 110 and 110a correspond to “drainage horizontal pipes”, and the reduced diameter portions 120 and 120a correspond to “reduced diameter portions”. The bending joint 140 corresponds to “a joint having a bent portion”.

  A preferred embodiment of the present invention is as described above, but the present invention is not limited thereto. It will be understood that various other embodiments may be made without departing from the spirit and scope of the invention. Furthermore, in this embodiment, although the effect | action and effect by the structure of this invention are described, these effect | actions and effects are examples and do not limit this invention.

100, 100a Drainage system 110, 110a Drainage horizontal pipe 120, 120a Reduced diameter portion 140 Bending joint

Claims (5)

A waste drainage system gradient is arranged at 1/5 or less,
Drainage horizontal pipe,
Provided in the pipe member having an inner diameter and the inner diameter of the diameter of the drainage transverse tube includes a reduced diameter portion having a reduced diameter of the inner diameter of the drainage lateral pipe,
The drainage lateral pipe and said pipe member is connected, waste drainage system. The piping member is connected to a joint having a bent portion,
2. The waste drainage system according to claim 1, wherein the reduced diameter portion is disposed inside a side of the drainage horizontal pipe where the joint is connected. The waste water drainage system according to claim 2, wherein the reduced diameter portion is formed so as to decenter the shaft core toward a side where the bending radius of the joint is large. The sewage drainage system according to any one of claims 1 to 3, wherein the reduced diameter part smoothly reduces the inner diameter of the drainage horizontal pipe. A structure having a convex portion at the end of the drainage horizontal pipe, a concave portion in the piping member, and fitting the convex portion and the concave portion, or a locking portion on an inner diameter of the drainage horizontal pipe a has a structure for fixing the reduced diameter portion to the locking portion, sewage drainage system according to any one of claims 1 to 4.

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