KR200239577Y1 - Preventive tool of Counter current for a sewer pipe - Google Patents

Abstract

The present invention relates to a sewage pipe backflow prevention device for preventing backflow of odor and sewage through the sewage pipe.

The present invention is open to the upper portion from the inner space portion 11, the lower portion of the space portion 11 is formed with a U-shaped guide surface 12 and the drain hole 13 in the center of the guide surface 12 Formed main body 1, ball-shaped and floating material of the size which can block the said drain hole 13, the opening-and-closing ball 2 accommodated in the said main body 1, and the lower-shaped inwardly upper part The upper surface of the guide cap 31 is formed and the drain cap 32 which can be opened and closed by the opening and closing ball 2 is formed in the center of the guide surface 31 is coupled to the upper portion of the main body 1 (3) and the screen (4) coupled to the upper portion of the upper cap (3), in the state that the opening and closing ball closing the drain hole of the main body by gravity prevents backflow of odor from the sewer pipe and sewage from the sewer pipe In the state of reverse flow, the opening and closing ball closes the drain hole of the upper cap Reverse flow of sewage is prevented.

Description

Preventive tool of Counter current for a sewer pipe}

The present invention relates to a sewage pipe backflow prevention device for preventing backflow of odor and sewage through the sewage pipe.

Sewage discharged after being used for washing or washing in a general household is transferred to a sewage treatment plant in most cases through sewer pipes.

By the way, sewage or odor through the sewer pipe is often flowed back to the home by the pressure in the sewer pipe, and in order to prevent this phenomenon, in most cases, a backflow prevention device is installed at the inlet to the sewer pipe in the home.

Conventional backflow prevention devices are provided with many types, and typical of these are to prevent the backflow of odor and sewage by keeping a part of the drained water always in the middle of the drain pipe.

However, these conventional non-return devices are not only extremely simple in structure, but also blockage of the drainage by the foreign body such as hair, which can prevent the drainage of the sewage. It is a structure that cannot be prevented.

The present invention has been devised in view of the above-described conventional problems, and its purpose is to provide a sewage pipe that is extremely simple in structure but does not have a risk of clogging a drain passage by foreign substances and prevents backflow of odors as well as sewage. It is to provide a backflow prevention device.

1 is an exploded perspective view of a backflow prevention device according to a first embodiment of the present invention

2A to 2C are cross-sectional views of an operating state of the backflow prevention device according to the first embodiment of the present invention.

3 is an exploded perspective view of a backflow prevention device according to a second embodiment of the present invention;

Figures 4a to 4b is an operating state cross-sectional view of the backflow prevention device according to a second embodiment of the present invention

<Code Description of Main Parts of Drawing>

1.Main body --- 11.Space part, 12.Guide surface, 13.Drainage hole

2. Opening Ball

3. Upper cap --- 31.Guide surface, 32.Drainage hole

4. Screen

5. Packing member

FA, FA '--- Backflow prevention device

100. Drainpipe

The backflow prevention device for sewage pipes provided by the present invention has a main body having a drainage hole formed at the center of the guide surface, while the upper portion of the sewage pipe is opened upward from the inner space portion and has a U-shaped guide surface formed therein. An opening and closing ball accommodated in the main body and a ball-shaped guide surface formed of a floatable material and a shape of a floating material are formed, and the guide surface of the shape of a 로 type is formed from the lower side to the upper side thereof, and the center of the guide surface is opened and closed by the opening and closing ball. A drainage hole may be formed to include an upper cap coupled to the upper portion of the body, and a screen coupled to the upper portion of the upper cap.

The present invention as described above, the opening and closing ball in the state of closing the drain hole of the main body by gravity prevents the backflow of odor from the sewer pipe, the drain ball of the upper cap by the back flow pressure in the state that the sewage flow back from the sewer pipe By closing the backflow of sewage is prevented.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings.

1 is an exploded perspective view of a backflow prevention device according to a first embodiment of the present invention.

The main body 1 is formed with a space portion 11 open to the upper portion therein, and a lower surface of the space portion 11 is formed with a U-shaped guide surface 12. In the center of the guide surface 12, a drain hole 13 for drainage is formed.

The opening and closing ball 2 for opening and closing the drain hole 13 is accommodated in the space 11 of the main body 1. The opening and closing ball 2 is made of a ball shape having a size capable of opening and closing the drain hole 13 and made of a material having a relatively high specific gravity and a floating property.

As described above, due to the state in which the opening and closing ball 2 is accommodated in the main body 1, the drainage hole 13 of the main body 1 maintains the closed state by the gravity of the opening and closing ball 2 and the main body 1. When the sewage is supplied to the space portion 11 from the upper portion of the opening 11, the opening and closing ball 2 is floated by buoyancy of the sewage so that the drainage hole 13 is opened and the sewage is drained through the drainage hole 13 by this state. have.

The upper cap 3 is coupled to the upper portion of the main body 1. The upper cap 3 is formed with a guide surface 31 of the shape ∧ from the bottom to the inner top, the drain hole 32 of the size that can be opened and closed by the opening and closing ball (2) in the center of the guide surface 31 Is formed. And the upper portion of the upper cap (3) is coupled to the screen (4) for preventing the passage of foreign matter.

Reference numeral 5 is a packing member coupled to the drainage holes 13 and 32 of the main body 1 and the upper cap 3.

As shown in FIG. 2, the non-return valve FA of the present embodiment combines the main body 1 to the drain pipe 100 connected to the sewage pipe as shown in FIG. Install to match.

The reverse flow prevention FA of the present invention installed as described above is a state in which the opening and closing ball 2 closes the drain hole 13 of the main body 1 by gravity as shown in FIG. This prevents backflow of odors. In the state where the sewage is discharged from the bottom into the main body 1, the opening and closing ball 2 is floated by buoyancy as shown in FIG. 2B to open the drainage hole 13 of the main body 1, thereby smoothly draining. In addition, in the state where the sewage flows back from the sewer pipe along the drain pipe 100, as shown in FIG. 2C, the opening and closing ball 2 closes the drainage hole 32 of the upper cap 3 by the back flow pressure, so that the backflow of the sewage Is prevented.

Figure 3 shows a perspective view of the backflow prevention device according to a second embodiment of the present invention.

The reverse flow prevention FA FA according to the present embodiment has the upper cap 3 omitted from the reverse flow prevention FA in the previous embodiment, and the screen 4 is coupled to the upper portion of the main body 1.

The non-return valve FA 'of the present embodiment has a state in which the opening and closing ball 2 closes the drain hole 13 of the main body 1 by gravity in a state where sewage is not discharged as shown in FIG. 4A. Backflow of odor is prevented. In the state where the sewage flows into the main body 1 from the bottom surface, as shown in FIG. 4B, the opening / closing ball 2 is floated by buoyancy to open the drainage hole 13 of the main body 1 to smoothly drain the water.

However, since the backflow prevention device FA 'of the present embodiment cannot prevent the backflow of sewage, it is preferable to install it only in a place where the sewage may not flow back.

The backflow prevention device of the present invention prevents the backflow of odor by closing the drain hole of the main body by gravity in the state where the sewage does not flow in, and the opening and closing ball of the upper cap by the backflow pressure in the state where the sewage flows back from the sewer pipe. By closing the drain hole to prevent backflow of sewage, and in the state where the sewage is discharged, the opening and closing ball is suspended by buoyancy to open the drain hole of the main body so that the drainage is made smoothly.

Therefore, the present invention is extremely simple in structure, so it can be supplied at low cost, and there is no fear of clogging the drainage passage by foreign substances, and it is possible to prevent backflow of odors as well as sewage, so that the drainage can be smoothed, as well as odor and sewage. It is possible to completely prevent backflow.

Claims (2)

The main body which is opened upward from the inner space 11 and has a U-shaped guide surface 12 formed below the space 11 and a drain hole 13 in the center of the guide surface 12 ( 1), a ball-shaped and floating material having a size that can block the drain hole 13, the opening and closing ball (2) accommodated in the main body 1 and the screen coupled to the upper portion of the main body (1) (4), wherein the opening and closing ball is prevented from flowing back of the odor from the sewer pipe in the state where the closing ball is closed by gravity, and the opening and closing ball is suspended by buoyancy in the state where the sewage is discharged through the body. Backflow prevention device for sewage pipes, characterized in that the drainage is made by opening the drain hole. 2. An upper portion according to claim 1, wherein a guide surface 31 is formed from the bottom to the inner upper portion, and a drain hole 32 is formed in the center of the guide surface 31, which can be opened and closed by the opening and closing ball 2. The cap 3 is coupled to the main body 1 and the screen 4 is coupled to the upper cap 3 so that the flow of odor from the sewer pipe is prevented in the state where the opening and closing ball closes the drain hole of the main body by gravity. In the state where the sewage is discharged through the main body, the opening and closing ball is floated by buoyancy to open the drainage hole of the main body and drainage is made. In the state where the sewage flows back from the sewer pipe, the opening and closing ball closes the drainage hole of the upper cap by the backflow pressure. Backflow prevention equipment for sewage pipes, characterized in that the backflow of sewage is prevented by doing.