JPH0868104A - Opening/closing device for sewage drain pipe tip opening section - Google Patents

Abstract

PURPOSE: To prevent a sewage odor and various insects from infiltrating into the water facility of a house through a drain pipe by slantly forming the opening face of a pipe coupled with the opening section of the drain pipe at one side end section, openably arranging an opening/closing cover on the slant opening face, and pivotally fitting the upper end section to the pipe. CONSTITUTION: A connection section 2 connected to a drain pipe H is formed at one side end section of a pipe 1, and an opening face 3 is formed at the other side end section. The opening face 3 is tilted forward by 45 deg.. An opening/closing cover 4 is openably fitted. A flexible material 4b is overlappingly arranged on the back face of the metal plate 4a of the cover 4. The pipe 1 is connected to the drain pipe H in a soil chamber M at the connection section 2. The soil chamber M is connected to the sewerage via a connecting pipe S. The drain pipe H is connected to the soil chamber M via the opening/closing cover 4 by the water pressure according to the quantity of the drain and the tare weight of the opening/closing cover 4 at the time of drainage, and the opening/closing valve 4 is automatically closed when drainage is completed. This device can assist to realize the sanitary and comfortable living environment.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention drains the tip opening of a drain pipe leading to a sewage basin or sewage connected to a sewer from a water supply of a house such as a kitchen sink, a washroom, and a drain of a bathroom. Sometimes it opens automatically, and when it is not drained, it automatically closes to prevent sewage odors and insects from entering the water supply area of the house from the sewer or sewage through the drain pipe. The present invention relates to a device for opening and closing a tip end opening of a drainage pipe for sewage.

[0002]

2. Description of the Related Art FIG. 5 and FIG. 6 are piping explanatory views showing a relationship between a conventional drainage pipe from a water supply section of a house and a sewage pipe connected to sewer. That is, in the prior art, the tip of the drain pipe H connected to the water supply of the house and extended to the outside is led out as it is into the sewage basin M as shown in FIG. Alternatively, as shown in FIG. 6, an elbow-joint E bent downward at a right angle was connected to the tip of the drainage pipe H and led out into the wastewater basin M. S is a connecting pipe connecting the sewage basin to the sewer. Even when the drainage pipe H is directly led to the sewage without passing through the wastewater basin M, the situation at the tip opening of the drainage pipe H is the same as above. However, in such a case, since the tip end opening of the drainage pipe H is always left open in the wastewater basin M, sewage odors and insects from the sewer and sewage are
There is a great possibility that the water will penetrate the drainage pipe H that is open when water is not drained and enter the water supply area of the house. Further, when the sewage basin M overflows due to a typhoon or heavy rain, the sewage may flow back to the water supply section of the house via the drain pipe H. Therefore, an S-shaped bent pipe is interposed between the drainage port of the water supply part of the house and the drainage pipe H so that water can be stored therein and an attempt is made to eliminate the fear. ,
Although such a means is effective in preventing the matter accidentally dropped to the drain from flowing out to the sewer, it does not block the drain pipe H and the sewer or the sewer, so that it can prevent the infiltration of sewage odors and insects. Had no effect. In addition, it may lead to a situation in which sewage odors are filled into the room through the water supply section and insects intrude into the room, so that daily life with unsanitary and unpleasant feelings is sometimes forced. was there.

[0003]

SUMMARY OF THE INVENTION Therefore, according to the present invention, the drain end of a drainage pipe connecting a water supply part of a house and a sewage basin or sewage is automatically opened during drainage.
A device for opening and closing the tip of the drain pipe for sewage that automatically closes at the end of drainage, which surely solves the above-mentioned problems of the conventional technology and contributes to the realization of a sanitary and comfortable living environment. The purpose is to provide.

[0004]

In order to achieve the above-mentioned object, the present invention provides an opening surface at the other end of a pipe having a joint portion at one end portion for fitting and connection with the tip opening portion of the drain pipe. It has an inclined opening surface that is inclined at an appropriate angle toward the lower end portion obliquely, and has an outer shape corresponding to this inclined opening surface that covers the outer surface of the inclined opening surface and a flexible material such as a rubber plate on the back side of the metal plate. The opening / closing lid attached to the pipe is characterized in that the upper end of the lid is pivotally attached to the pipe so that the lid can be opened and closed.The joint of the pipe of the opening / closing device configured as described above is connected to the tip opening of the drainage pipe. It is used by fitting and connecting.

The opening / closing lid has a double structure in which a flexible material such as a metal plate and a rubber plate is polymerized, and the metal plate on the surface side is particularly one having high corrosion resistance such as stainless steel, brass, copper plate or the like. May be used.

The angle of inclination of the inclined opening surface at the tip of the pipe may in principle be an appropriate angle, but in consideration of smoother and more reliable opening / closing of the opening / closing lid, in particular, it is 45 degrees with respect to the vertical surface in the diameter direction of the pipe. It may be slanted forward and downward.

When the weight of the opening / closing lid is light, the lower side of the opening / closing lid is complemented by the weight of the opening / closing lid in order to complement the automatic closing action of the opening / closing lid on the opening surface of the pipe tip when the pipe is not drained. A weight of appropriate weight may be attached.

[0008]

In the outlet end of the drainage pipe to the sewage basin or the like, the joint portion of the pipe in the switchgear of the above structure is fitted and connected. Therefore, at normal times (when not draining), the outlet end of the drainage pipe to the sewage basin is closed by the opening / closing lid that closes the inclined opening surface of the pipe end that connects to the drainage pipe, and shuts off from the sewage basin and sewage. Has been done. When the water is drained from the water supply area of the house, the drainage flows down the drainage pipe to reach a sewage basin, etc., and the water pressure corresponding to the amount of water pushes the lid open diagonally upward, and the lid opens and closes with the pipe. It opens by turning the fitting part as a fulcrum by turning it counterclockwise at an appropriate angle, and drainage is discharged to a sewage basin and sent to the sewer. When the drainage is completed, the water pressure due to the drainage is released, so the open / close lid rotates counterclockwise due to its own weight, and the flexible material such as the rubber plate on the back side closely contacts the inclined opening surface of the pipe. Then, this is closed, and the opening surface of the outlet end of the drainage pipe to the sewage basin is blocked from the sewage basin and the sewer.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS.

In FIGS. 1 and 2, reference numeral 1 denotes a pipe which is used by being connected to a drainage pipe H as shown in FIG. 2 and which is fitted at one end to the outer surface of the outlet end opening of the drainage pipe H to the sewage basin M. A joint portion 2 for connecting and connecting is formed, and the other end portion is an open surface.
The opening surface at the other end is an inclined opening surface 3 which is cut out at an angle of 45 degrees from the upper part toward the obliquely lower end part with respect to the diametrically perpendicular surface of the pipe. This inclined opening surface 3
An open / close lid 4 having an outer shape corresponding to the cross-sectional shape and covering the outer surface is attached to the outer surface of the so as to be openable and closable.
Reference numeral 5 denotes a hinge serving as an opening / closing means for opening and closing the hinge, one end of which is fixed to the upper end of the opening / closing lid 4 and the other end of which is fixed to the upper outer surface of the pipe 1 by a screw 6. The opening / closing lid 4 is provided on the back surface side of the metal plate 4a with a flexible material 4b such as a rubber plate superposed by rivets or the like. The opening / closing lid 4 rotates up and down around the shaft pin of the hinge 5 to open and close the inclined opening surface 3. The joint portion 2 of the pipe 1 is fitted and connected to the outer surface of the tip end opening portion of the drainage pipe H in the wastewater tank M, and is fixed by the screw 7. The drainage pipe H is connected to and extends from the water supply part of the house, and the sewage basin M is connected to the sewer via a connection pipe S.

In principle, the material of the metal plate 4a arranged on the surface side of the opening / closing lid 4 is not limited, but in the embodiment, in consideration of durability, a material such as stainless steel, brass, copper plate or the like having high corrosion resistance is used. There is. As the flexible material 4b disposed so as to be attached to the back surface side of the metal plate 4a as long as it has excellent adhesiveness to the inclined opening surface 3 of the pipe 1, a sponge plate or the like is provided outside the rubber plate. But it doesn't matter.

The inclination angle of the inclined opening surface 3 at the tip of the pipe 1 may be an appropriate angle in principle, but in actual use, in the case of the oblique downward direction of 45 degrees as shown in the above embodiment. Is preferred. In this case, the magnitudes of the horizontal and vertical components of the rotational moment due to gravity acting diagonally downward from the center, which is the center of gravity of the opening / closing lid 4, are equal,
The opening and closing action of the opening and closing cover 4 using the drainage water pressure and the gravity of the opening and closing cover 4 is well balanced, the opening and closing cover 4 opens with an appropriate pressure, and the inclined opening surface 3 can be well closed. Because. By the way, when the inclination angle is smaller than 45 degrees, the magnitude of the force of the horizontal component of the rotary moment becomes smaller than that of the vertical component as it becomes smaller. Although the opening / closing lid 4 can be opened with a small pressure, at the same time, there is a tendency that the opening / closing lid 4 is relatively gradually lowered in terms of the goodness of maintaining the closure of the inclined opening surface 3. On the contrary, when the tilt angle is larger than 45 degrees, the magnitude of the force of the horizontal component becomes larger as compared with that of the vertical component, so that the inclined opening surface Although the goodness of maintaining the occlusion of 3 is gradually increased, there is a tendency that an excessively large pressure is required to open the opening / closing lid 4.

FIG. 3 shows another embodiment, which is an opening / closing lid 4.
If there is a possibility that the goodness of maintaining the closure of the inclined opening surface 3 may be impaired due to the light weight, the lower portion of the opening / closing lid 4 may have an appropriate weight depending on its weight as shown in the drawing. The weight 8 is attached to cope with it.

FIG. 4 shows still another embodiment. As the opening / closing means of the opening / closing lid 4, a hinge 9 made of a flexible rubber plate is used instead of the usual hinge 5 according to the above-mentioned embodiment. The portion is fixed to the upper end portion of the opening / closing lid 4 and the pipe 1 via the screw 10. The opening / closing means is not limited to these, and for example, a bearing may be formed on the pipe 1 and the upper end of the opening / closing lid 4 may be rotatably attached to the bearing by a pin.

[0015]

Since the switchgear according to the present invention has the above-mentioned structure, it solves the above-mentioned problems of the prior art and has the following effects.

In the switchgear according to the first aspect of the present invention, the inclined opening surface of the tip end portion of the pipe connected to the water supply part of the house and fitted and connected to the tip end opening portion of the drainage pipe led out into the sewage basin or sewage. Through the opening and closing of the opening and closing lid composed of a metal plate and a flexible material such as a rubber plate, which are rotatably mounted in the up-and-down direction, depending on the amount of drainage water and the own weight of the opening and closing lid, The opening of the tip of the drainage pipe is automatically opened during drainage and connected to the sewage basin or sewage. When the drainage is completed, it is automatically closed and cut off from the sewage basin and sewage. It is possible to reliably prevent the inconvenience that sewage odors and insects enter the water supply of the house and even the room through the pipe. Therefore, it can help to realize a hygienic and comfortable living environment. Further, even if the sewage basin overflows due to a typhoon or heavy rain, it is possible to reliably prevent the inconvenience that the sewage flows back through the drain pipe to the water supply section of the house.

In the opening / closing device of the second aspect, in addition to the above effect, the durability of the opening / closing lid is increased by the use of a material having a high corrosion resistance, which is more suitable for use.

In the opening / closing device according to the third aspect of the present invention, since the inclination angle of the inclined opening surface at the tip of the pipe, that is, the inclination angle of the opening / closing lid is 45 degrees obliquely downward, the rotating moment by gravity acting on the center of gravity of the opening / closing lid. Since the magnitudes of the forces of the horizontal and vertical components are equal to each other and the balance of the opening / closing action of the opening / closing lid is in the best state, the opening / closing of the tip end portion of the drainage pipe can be opened / closed more smoothly and reliably. In addition to the effect based on, it is more suitable for use.

In the switchgear of claim 4, claim 1
In addition to the effect based on
Even if the weight of the opening / closing lid is light, the weight of the opening / closing lid can be appropriately adjusted to smoothly and reliably open / close the tip opening of the drainage pipe.

[Brief description of drawings]

FIG. 1 is a side view of a switchgear according to an embodiment of the present invention.

FIG. 2 is an explanatory view of use in a state where the opening / closing device of the above is attached to a tip opening portion of a drainage pipe led out into a sewage basin.

FIG. 3 is a perspective view of an opening / closing lid according to another embodiment.

FIG. 4 is a side view of a switchgear according to still another embodiment.

FIG. 5 is an explanatory diagram showing a connection relationship between a conventional drain pipe and a sewage basin.

FIG. 6 is an explanatory view showing a connection relationship between a conventional drain pipe having an elbow-joint connected to a tip portion thereof and a sewage basin.

[Explanation of symbols]

 1 pipe 2 joint with drain pipe 3 inclined opening surface 4 opening / closing lid 4a metal plate 4b flexible material such as rubber plate 5 hinge 6 screw 7 screw 8 weight 9 rubber plate hinge 10 screw H drain pipe M waste water basin S connection piping

Claims (4)

[Claims] Claim: What is claimed is: 1. A pipe, which has a joint at one end thereof for fittingly connecting to a tip opening of a drainage pipe, has an opening surface at the other end, which is an inclined opening surface inclined at an appropriate angle from an upper portion to an obliquely lower tip portion. None, an opening / closing lid, which has an outer shape corresponding to this inclined opening surface and covers the outer surface correspondingly, and a flexible material such as a rubber plate is attached to the back side of the metal plate, is pivotally attached to the pipe at the upper end thereof. The opening / closing device for the opening of the tip of the drainage pipe for sewage is characterized in that it is arranged so as to be openable and closable. 2. The opening / closing of the tip end opening of the drainage pipe for sewage according to claim 1, wherein a metal plate having a high corrosion resistance such as stainless steel, brass, and copper plate is used as a material of the surface side of the opening / closing lid. apparatus. 3. The sewage system according to claim 1 or 2, wherein the angle of inclination of the inclined opening surface at the tip of the pipe is such that it is inclined 45 degrees obliquely forward and downward with respect to the vertical plane in the diameter direction of the pipe. Opening and closing device for the opening of the drain pipe tip. 4. An opening / closing lid having a weight of an appropriate weight attached to the lower side of the opening / closing lid in order to complement the automatic closing action of the opening / closing lid with respect to the inclined opening surface of the pipe end when the pipe is not drained. 3. The method according to claim 1, wherein
Or the opening / closing device of the drainage pipe tip opening for sewage described in 3.