JP2000240877A - Catch basin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a catch basin to prevent the reverse flow of drain flowing in through an inflow connection pipe, even when two inflow connection pipes are interconnected approximate orthogonally. SOLUTION: The pipe axes of two inflow connection pipes 2 and 3 are positioned approximately orthogonal to each other to interconnect the two inflow connection pipes 2 and 3, and the pipe axis of an outflow connection pipe 4 is positioned in the range off the conformation of an angle between the two inflow connection pipes 2 and 3, and the outflow connection pipe 4 is connected to a connection part between the two inflow connection pipes 2 and 3. Sidewalls a1 and b1 on the side, where the two inflow connection pipes 2 and 3 are positioned adjacently to each other, are further lengthened than sidewalls a2 and b2 on the opposite side, and the sidwalls a2 and b2 on the opposite side are connected to the sidewalls c1 and c2 of the outflow connection pipes 4 through smooth slopes d1 and d2, respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drain basin installed at a junction where two drain pipes join. In particular, it relates to a drainage basin suitable for being installed at a junction where two drainage pipes for flowing toilet sewage merge.

[0002]

2. Description of the Related Art Generally, drain pipes for draining water are bent,
At the junction where two or more drainage pipes join, a drainage basin is installed. The lid attached to the basin opening of this drainage basin is removed to remove bent parts and solids in sewage clogged at the junction. Then, a cleaning tool was inserted into the drain pipe from the drain basin to remove deposits attached to the inside of the drain pipe and substances attached to the pipe. Therefore, there are many types of drainage basins depending on the number and angle of the inflow-side drainage pipes to be connected.

[0003] The present invention relates to a drainage basin installed at a junction where two drainage pipes join in such a drainage basin. A drain basin having various structures is also known as a drain basin installed at a junction where the two drain pipes join. For example, Japanese Utility Model Laid-Open No. 63-15394 (conventional example 1)
), One inflow connection pipe and the outflow connection pipe are connected in a substantially straight line, and the other inflow connection pipe approaches one inflow connection pipe from a direction substantially perpendicular to the connection portion. A drainage basin which is bent in the direction of the outflow connection pipe and is connected to a connection portion between one inflow connection pipe and the outflow connection pipe is described.

Japanese Utility Model Laid-Open Publication No. 63-15395 (hereinafter referred to as Conventional Example 2) discloses that one inflow connection pipe and one outflow connection pipe are connected substantially in a straight line, and the other inflow connection pipe is connected to one of the inflow reception pipes. A drainage basin connected to an inflow port and an outflow connection pipe at an acute angle with one inflow connection pipe is described. In this drainage basin, between one inflow connection pipe and the other inflow connection pipe, a guide wall extending from between the two inflow connection pipes to the center of the junction of the outflow connection pipes is provided. I have.

[0005]

However, in the drainage basin described in the prior art 1, the inflow-side drainage pipe is connected to the two inflow connection pipes, and the outflow-side drainage pipe is connected to one outflow connection pipe. When used, the drainage flowing from the inflow connection pipe approaching from the right angle collides with the wall of the confluence of the almost straight inflow connection pipe and the outflow connection pipe,
A backflow occurs in the direction of the inflow connection pipe in which the drainage is connected substantially linearly, and the flow of the drainage flowing in the direction of the outflow connection pipe from the inflow connection pipe connected in a substantially linear manner is deteriorated. appear.

In particular, in the case of a drain pipe through which toilet sewage flows, a stationary portion of the sewage is generated between the backward flow and the forward flow,
There is a problem that suspended matter in the sewage adheres to the pipe wall near the pipe wall of the stationary part, and microorganisms grow in the vicinity of the stationary part, and the microorganisms adhere to the pipe wall, and the flow of the sewage becomes poor. appear. Also, backflow does not occur in Conventional Example 2, but
Since the guide wall is extended to the center of the drainage basin, there is a problem that the passage area of the drainage at the outlets flowing from both the inflow connection pipes is small and the flow is poor.

Further, a guide wall is provided to prevent a backflow of a drainage basin in which two inflow connection pipes as described in the prior art 1 are connected at substantially right angles. The guide wall protrudes more in the direction of blocking the flow than at the acute angle, and the guide wall allows the flow from the inflow connection pipe. Therefore, the passage area of the outlet is further reduced, and the flow of drainage is worse than that of the drainage basin described in Conventional Example 1.

In order to elucidate the mechanism of the occurrence of this backflow, the inventor manufactured a pipe having a connecting portion shown in FIGS. 4 to 6 and conducted an experiment. That is, the pipeline 10 shown in FIG.
0, one inlet-side conduit 101 and the other inlet-side conduit 1
02 is connected with the pipe axis at a substantially right angle, and the outflow side pipeline 1
Numeral 03 is connected to the joint of the two inflow side pipes 101 and 102 with the pipe axis being substantially linear with the pipe axis of one of the inflow side pipes 101.

In the pipe 200 shown in FIG. 5, one inlet pipe 201 and the other inlet pipe 202 are connected with their pipe axes substantially perpendicular to each other, and these two inlet pipes 201 are connected to each other. ,
At the joint of 202, the angle between the pipe axis and the diagonal of the angle between one inflow-side pipe 201 and the other inflow-side pipe 202 (an angle that forms an extension of the other inflow-side pipe 202 is an acute angle). θ), and there is a boundary (bent line) M between one inflow-side pipeline 201 and the outflow-side pipeline 203 at an extension P of the other inflow-side pipeline 202.

In the line 300 shown in FIG. 6, one inflow side line 301, the other inflow side line 302, and the outflow side line 303 have substantially the same relationship as in FIG. Of the inflow side pipeline 301 and the outflow side pipeline 30 are located at a position where the inflow side pipeline 301 has moved from the extension portion Q of the inflow side pipeline 302 to the inflow side pipeline 301 side.
The difference is that there is a boundary (bending line) N with that of FIG. That is, the inflow side pipe 301 of the extension portion Q of the other inflow side pipe 302
Has an inclined surface.

Then, one of the inflow side pipelines 101, 20
1, 301 while flowing water to the outflow-side conduits 103, 203, 303 while the other inflow-side pipelines 102, 202, 30
When water was flowed from the pipe 2, the pipe 10 shown in FIGS.
At 0 and 200, a backflow occurred in the upstream portion of one of the inflow-side pipelines, and the flow of water flowing from one of the inflow-side pipelines 101, 201, and 301 to the outflow-side pipelines 103, 203, and 303 became poor. However, water flowed smoothly in the pipeline shown in FIG. 6, and no backflow occurred.

Therefore, an object of the present invention is based on the above experimental results, and even if two inflow connection pipes are connected at substantially right angles, the wastewater flowing from the inflow connection pipe is backflowed. Not to provide a drainage basin.

[0013]

DISCLOSURE OF THE INVENTION The present invention has been made to achieve the above object, and the invention according to claim 1 comprises two inflow connection pipes and one outflow connection pipe. A drainage basin which is connected and provided with a basin opening which is open upward at a connection point between the two inflow connection pipes and the one outflow connection pipe, wherein the two inflow connection pipes have a pipe shaft substantially. The outlet connection pipes are connected at right angles to each other, and are connected to the junction of the two inlet connection pipes so that the pipe axes are within a diagonal range formed by the pipe axes of the two inflow connection pipes. In each of the inflow connection pipes, the side wall on the adjacent side is made longer than the opposite side wall, and the opposite side wall is a smooth inclined surface that is inclined outwardly from an extension of this side wall, and the side wall of the outflow connection pipe is formed. Is connected to

According to a second aspect of the present invention, in the first aspect of the invention, the outflow connection pipe has a pipe axis substantially parallel to one of the two inflow connection pipes at the tip. And opened at the opposite side of the inflow connection pipe.

This will be described with reference to FIG.
And (1) two inflow connection pipes.
The angle α between the tube axes X and Y of A and B is almost a right angle.
(2) Outflow connection pipes C are the two inflow connection pipes.
At the joint between A and B, the pipe axis Z is set in the range of
(3) Two inflow connections
Adjacent side walls a of tubes A, B₁, B₁Are on the other side
Side wall a_Two, B_TwoLonger, (4) inflow connection pipe A,
Side wall a opposite to B_Two, B_TwoIs this side wall a_Two, B _Twoof
Γ outside the extension₁, Γ_TwoSmooth slope that only slopes
d₁, D_TwoAnd the side wall c of the outflow connection pipe C₁, C_TwoConnected to
It satisfies the four conditions of

Further, the invention according to claim 2 provides the outflow connection pipe C
Are those bent two inlet connecting pipe A, either in one of the tube axis X or Y parallel to the tube axis Z ₂ of B at the tip portion. Incidentally, in the invention of the second aspect, in the rotatable intermediate part R of the outlet connection pipe, the intermediate portion tube axis Z ₂ outlet connection pipe C by rotating the R of one of the inlet connection pipe A It is preferable that the pipe can be made substantially parallel to the pipe axis X or substantially parallel to the pipe axis Y of the other inflow connection pipe B, because it can be made parallel to both pipe axes.

(Operation) The operation of the first and second aspects of the present invention will be described with reference to FIG. In the case of using the drainage basin of the invention according to claim 1, the inflow pipes are connected to one inflow connection pipe A and the other inflow connection pipe B, respectively.
The outflow pipe is connected to the outflow connection pipe C. Then, drainage such as sewage flows from the inflow pipe to the outflow pipe.

Then, the outflow connection pipe C is connected to the joint of the two inflow connection pipes A and B by connecting the pipe axis Z to the two inflow connection pipes A and B.
Are connected within the range of the diagonal angle β between the angles α formed by the pipe axes X and Y, so that they are located outside the extension of the side wall b ₂ on the opposite side of the adjacent side walls of both the inflow connection pipes A and B. Outflow connection pipe C
There is a side wall c _2. Moreover, they are connected by a smooth surface and the side walls b ₂ and the side wall c _2. Therefore, the smooth surface connecting the side wall b ₂ and the side wall c ₂ is an inclined surface d ₂ inclined outward by γ ₂ .

[0019] Then, since the side walls b ₁ adjacent to one of the inlet connection pipe A of the other of the inlet connection pipe B is longer than the side wall b ₂ opposite to the bending line F of the side wall b ₂ and the side wall c ₂ inflow connection It is located at a position moved toward the inflow connection pipe B from the extension of the pipe A. Thus, the same conditions as the experiment shown in FIG. 6, the waste water flowing from one inlet connection pipe A impinges always inclined surface d _2, flows along the inclined surface d _2, backflow does not occur.

[0020] Similarly, waste water flows from the other inlet connection pipe B collides always inclined surface d _1, flows along the inclined surface d _1, backflow does not occur. As described above, even if the angle α formed by the pipe axes X and Y of the two inflow connection pipes A and B is substantially a right angle, the backflow also occurs in the wastewater flowing from either of the two inflow connection pipes A and B. do not do.

According to the second aspect of the present invention, the outflow connecting pipe C
, Since the two inlet connection pipes A, are bent parallel to the tube axis Z ₂ and one of the tube axis X or Y of B at the tip, two inlet connecting pipe A, connected to the B When the inflow pipe is substantially perpendicular and the outflow pipe connected to the outflow connection pipe C is straight with respect to the inflow pipe connected to the inflow connection pipe A, or when the inflow pipe is connected to the inflow connection pipe B. It can be used when it is straight with respect to the incoming pipe. Note that these two cases are cases where the branch pipe is connected to the most main pipe at substantially right angles. Also, if the middle part of the outflow connection pipe C is made rotatable so that the opening of the outflow connection pipe C can be made parallel to the pipe axes X and Y of either of the inflow connection pipes A and B, one drainage basin can be used. Can be used in both cases.

[0022]

Next, embodiments of the present invention will be described. 1 and 2 show one embodiment of the present invention.
FIG. 1 is a plan view of a drainage basin, and FIG. 2 is a perspective view showing a use state of the drainage basin of FIG.

1 and 2, reference numeral 1 denotes a drainage basin. The drainage basin 1 has two inflow connection pipes 2, 3 and one outflow connection pipe 4, which are connected to each other. A connection port between the inflow connection pipes 2 and 3 and one outflow connection pipe 4 is provided with a basin opening 5 opened upward. The distal ends of the two inflow connection pipes 2 and 3 serve as receiving ports 21 and 31 for connecting the inflow pipes 6 and 7, respectively. Outflow connection pipe 4
Is a receiving port 41 for connecting the outflow pipe 8.

The two inflow connection pipes 2, 3 are
The pipe shafts 22 and 32 are connected at substantially right angles, and the outflow connection pipe 4 is connected.
Connects the pipe shaft 42 to the joint of the two inflow connection pipes 2 and 3.
Within the range of the diagonal β of the angle α formed by the two inflow connecting pipes 2 and 3.
Connected. In the two inflow connection pipes 2, 3,
Adjacent side wall a₁, B₁Is the opposite side wall a_Two, B_Two
It is longer. Also, the opposite side wall a_Two, B_Two
Are outside the extension of this side wall by an angle γ₁, Γ
_TwoSmoothly inclined surface d₁, D _TwoAnd the outflow
Side wall c of connecting pipe 4₁, C_TwoIt is connected to the.

Further, the outflow connection pipe 4 is rotatably connected by a connection portion 7 inclined at approximately 45 degrees, and by rotating this connection portion 7, the pipe shaft 45 at the distal end of the outflow connection pipe 4 is rotated. Can be made substantially parallel to either one of the pipe shafts 22, 32 of the two inflow connection pipes 2, 3, so that the reception port 42 of the outflow connection port 4 is connected to the reception port of the inflow connection pipe 2. The opening 22 can be opened toward the opposite side of the receiving port 32 of the inflow connecting pipe 3.

Next, a method of using the drainage basin 1 will be described. The inflow pipes 6 and 7 are connected to the reception port 22 of one inflow connection pipe 2 and the reception port 32 of the other inflow connection pipe 3, respectively, and the outflow pipe 8 is connected to the reception port 42 of the outflow connection pipe 4.
Then, drainage such as sewage flows from the inflow pipes 6 and 7 to the outflow pipe 8.

Then, the outflow connection pipe 4 is connected to the connection portion between the two inflow connection ports 2 and 3 by connecting the pipe shaft 42 to the two inflow connection pipes 2 and 3.
Since 3 is connected in the range of diagonal β of the angle α of the tube axis 22 and 32, outside the extension line of the side wall b ₂ side walls opposite the adjacent both inlet connection pipe 2 and 3 there are side walls c ₂ of the outflow connecting pipe 4 to. The side wall b ₂ and the side wall c ₂
And are connected by a smooth surface. Therefore, this side wall b ₂
Side walls connecting the side walls c ₂ and has a simply inclined smooth inclined surface d ₂ angle gamma ₂ outwardly.

[0028] Then, since the side walls b ₁ adjacent to one of the inlet connection pipe 2 of the other inlet connection pipe 3 is longer than the side wall b ₂ opposite to the bending line F of the side wall b ₂ and the side wall c ₂ inflow connection It is located at a position moved toward the inflow connection pipe 3 from the extension of the pipe 2. Thus, the same conditions as the experiment shown in FIG. 6, the waste water flowing from one inlet connection pipe 2 collides always inclined surface d _2, flows along the inclined surface d _2, backflow does not occur.

The outflow connection pipe 4 has two inflow connection ports.
At the connection portions 2 and 3, the pipe shaft 42 is connected to the two inflow connection tubes 2 and 3
Angle in the range of the diagonal β of the angle α formed by the tube axes 22 and 32
So that both inflow connection pipes 2 and 3
Side wall b opposite to adjacent side wall ₁Flow outside the extension of
Side wall c of outlet connection pipe 4₁There is. Also, this side wall b₁And side walls
c₁And are connected by a smooth surface. Therefore, this side wall
b₁And sidewall c₁And the side wall connecting_TwoOnly tilt
Smooth slope d₁It has become.

[0030] Then, since the side wall a ₁ adjacent to one of the inlet connection pipe 2 of the other inlet connection pipe 3 is longer than the side wall a ₂ opposite to the bent line E of the side wall a ₂ and the side wall c ₁ flows connected It is located at a position moved in the direction of the inflow connection pipe 2 from the extension of the pipe 3. Thus, the same conditions as the experiment shown in FIG. 6, the waste water flowing from one inlet connection tube 3 collides always inclined surface d _1, flows along the inclined surface d _1, backflow does not occur.

As described above, even if the angle α formed by the pipe shafts 22 and 32 of the two inflow connection pipes 2 and 3 is substantially a right angle,
Drainage flowing from either of the two inflow connection pipes 2 and 3 does not generate backflow.

Further, by rotating the connecting portion 7 of the outflow connection pipe 45, the pipe shaft 42 of the outflow connection pipe 4 is made parallel to one of the two inflow connection pipes A and B. Since the pipe shaft 45 can be used, the inflow pipes 6 and 7 connected to the two inflow connection ports 2 and 3 are substantially at right angles, and the outflow pipe 8 connected to the outflow connection port 4 is connected to the inflow pipe 8. This drainage basin 1 can be used for both the inlet pipe 6 connected to the inlet 2 and the inlet pipe 7 connected to the inlet port 3 regardless of whether it is straight. it can.

[0033]

According to the first aspect of the present invention, the outflow connection pipe is
Since the pipe axes are connected at an angle within a diagonal range between the angles formed by the pipe axes of the two inflow connection pipes, the side wall opposite to the adjacent side wall of the two inflow connection pipes and the outflow connection pipe are connected. Are connected to each other to form a smooth inclined surface inclined outward. And, since the side wall adjacent to the one inflow connection pipe of the other inflow connection pipe is longer than the opposite side wall, the drainage flowing from one inflow connection pipe and the drainage flowing into the other inflow connection pipe must be always this. It collides with a smooth inclined surface, flows along the inclined surface, and no backflow occurs.

According to the second aspect of the present invention, the outflow connection pipe is
At the distal end, the inflow pipes connected to the two inflow connection pipes are bent at a right angle to the pipe axis parallel to one of the two inflow connection pipes. Used when the outflow pipe connected to the inflow connection pipe A is straight with respect to the inflow pipe connected to the inflow connection pipe A, or when the outflow pipe connected to the inflow connection pipe is linear with the inflow pipe connected to the inflow connection pipe. it can. In addition, if the middle part of the outflow connection pipe is rotatable so that the opening of the outflow connection pipe can be made parallel to the pipe axis of either inflow connection pipe, one drainage basin can be used in both cases, which is convenient. It is.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention, and is a plan view of a drainage basin.

FIG. 2 is a perspective view showing a use state of the drainage basin of FIG. 1;

FIG. 3 is an explanatory diagram for explaining the gist of the present invention.

FIG. 4 shows one of pipes used in an experiment for checking whether or not backflow has occurred.
It is explanatory drawing which shows an example.

FIG. 5 is an explanatory diagram showing another example of a pipeline used for an experiment for checking whether or not backflow has occurred;

FIG. 6 is an explanatory diagram showing another example of a pipeline used for an experiment for checking whether or not backflow has occurred;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Drainage basin 2 One inflow connection pipe 21 Reception port 22 Pipe axis 3 The other inflow connection pipe 31 Reception port 32 Pipe axis 4 Outflow connection pipe 41 Reception port 42 Pipe axis 45 Tip axis α The angle between two inflow connection pipes β diagonal γ Slope angle

Claims (2)

[Claims] 1. An inflow connection pipe is connected to two outflow connection pipes, and a basin opening opened upward at a connection point between the two inflow connection pipes and one outflow connection pipe. A drain basin provided, wherein the two inflow connection pipes are connected with the pipe axes at substantially right angles, and the outflow connection pipes are connected to the two inflow connection pipes by connecting the two pipe axes to the two inflow connection pipes. The two connecting pipes are connected within a diagonal of an angle formed by the pipe axes of the connecting pipes.
A drain basin characterized in that the opposite side wall is connected to the side wall of the outflow connection pipe with a smooth inclined surface inclined outward from an extension of the side wall. 2. The outflow connection pipe is bent at a distal end so that a pipe axis becomes substantially parallel to one of the two inflow connection pipes, and is opened on the opposite side of the inflow connection pipe. The drainage basin according to claim 1, wherein the drainage basin is formed.