KR20020027859A - Drain Trap - Google Patents

Abstract

PURPOSE: An apparatus for preventing the generation of bad smell for a manhole of a ditch is provided to prevent the bad smell generated from the interior of the manhole from being transmitted to the outside. CONSTITUTION: The apparatus(20) for preventing the transmission of bad smell generated inside the manhole is comprised of a funnel shaped body(21) composed of a hollow V-shaped upper structure and a hollow cylindrical lower structure; an annular projection(23) located beneath a manhole cover(24); a support(28) attached to the outer surface of the body; a smell isolation device(22) rotatable about a support; and a reinstatement device installed in the vicinity of the one end of the smell isolation device. The smell isolation device is rotated so as to be opened due to the water pressure generated when water input through the manhole cover passes the body, and then the smell isolation device is rotated so as to be closed by virtue of the action of the reinstatement device according to the reduction of the water pressure.

Description

Drain Trap for Sewer Manholes {Drain Trap}

The present invention relates to an odor preventing device for sewer manholes, and more particularly, to an odor preventing device for blocking the spread of various odors in the basement to prevent odor propagation through the manhole.

Sewer manholes are generally installed at certain sections of the roadside, such as housing complexes and shopping centers, and collect rainwater or sewage and move them to sewage treatment plants.

1 is a cross-sectional view of a conventional manhole, in which the manhole cover 2 is placed on the upper part of the manhole 1, and the water inlets 3 and the drains 4 are provided on both sides of the manhole 1, respectively. Is formed. The manhole cover (2) is formed with a number of holes through which rainwater can pass through the roadside, the inlet (3) is connected to the drain pipes such as homes and restaurants and serves to get filthy water into the manhole (1). In addition, the drain 4 is installed at a position slightly lower than the inlet 3 so that the received sewage can flow to the sewage treatment plant through a sewage pipe.

The manhole formed with such a structure is provided with a drain at a distance from the bottom of the manhole to prevent clogging of the sewer due to various foreign matters such as sewage and rainwater. Accordingly, foreign substances are easily accumulated in the lower part of the manhole at all times and are easily decayed, thereby causing odor to the citizens through the holes in the manhole cover.

The present invention has been made to solve such a problem, it is an object of the present invention to provide a sewer manhole odor prevention device for preventing the odor generated in the manhole is transmitted to the outside installed in the manhole.

In order to achieve the above object, the odor preventing device of the present invention has a hollow cylindrical lower structure integrally attached to the bottom of the hollow V-shaped upper structure that is gradually reduced in diameter downward. A funnel-shaped body, an annular protrusion projecting outward from the top of the upper structure to be placed directly under the manhole cover, a support attached to the outer surface of the body, and a odor shield capable of rotating the support as a point And a return device provided near one end of the odor blocking port.

Therefore, when water introduced through the manhole cover passes through the body, the water is rotated in the direction of opening the odor blocking opening by water pressure, and when the water pressure decreases, the water is turned in the direction of closing the odor blocking opening by the action of the above-mentioned return device. By returning to the original position, it is possible to prevent the odor generated inside the manhole from being transmitted to the outside.

The above-mentioned return device may be a weight or elastic body of weight, and when the hydraulic pressure decreases, the odor blocking port is rotated by the gravity of the weight or the relaxation force of the elastic body.

In addition, the odor preventing device according to another embodiment of the present invention, the hollow V-shaped body is gradually reduced in diameter as the lower side, and protrudes to the outside of the top of the body to be placed directly under the manhole cover It has an annular protrusion, the outer wall has a odor blocking port of the plate shape higher than the floor, and a connecting device for coupling the body and the odor blocking port having a hole or gap through which the water introduced through the manhole cover can pass. It is done.

According to another embodiment of the present invention, the odor preventing device includes a U-shaped body extending in an inner direction of a hollow, which gradually decreases in diameter as it goes downward, and protrudes outward from the uppermost portion of the body to form a manhole cover. Consists of an annular protrusion that is to be placed directly below, a cone-shaped odor blocking opening with a lower opening, a gap through which water flows through the manhole cover, and a connecting device for coupling the body and odor blocking opening. It features.

Accordingly, the water introduced through the manhole cover is always kept below the height of the outer wall of the above-described odor blocking port through the body, and this water prevents the odor generated in the manhole from being transferred upward.

The present invention can effectively block the odor emitted from the inside of the manhole by the relatively simple structure as described above to the outside of the manhole through the manhole cover or sewer inlet.

1 is a cross-sectional view showing the interior of a conventional manhole.

2 is a cross-sectional view showing a state in which the odor preventing device for the sewer manhole according to the first embodiment of the present invention is installed in the manhole.

2 is a cross-sectional view showing a state in which the odor preventing device for the sewer manhole according to the first embodiment of the present invention is installed in the manhole.

3 is a cross-sectional view showing a state when water is passed in the odor preventing device for sewer manhole shown in FIG.

4 is a cross-sectional view showing a state in which the odor preventing device for the sewer manhole according to the second embodiment of the present invention is installed in the manhole.

5 is a cross-sectional view showing a state in which the odor preventing device for the sewer manhole according to the third embodiment of the present invention is installed in the manhole.

6 is a cross-sectional view showing a state in which the odor preventing device for the sewer manhole according to the fourth embodiment of the present invention is installed in the manhole.

<Description of the symbols for the main parts of the drawings>

1, 10: manhole 2, 24: manhole cover

3: water inlet 4: water outlet

20, 30, 40, 50: odor preventing device 21, 31, 41, 51: the body

22, 32, 43, 53: smell block 23, 33, 42, 52: annular projection

25, 35: U-shaped structure 26: horizontal projection

27 weight 28, 38, 44 support

29, 39: projection 36: slope projection

37: elastic body

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

2 is a schematic cross-sectional view showing a state in which the odor preventing device 20 according to the first embodiment of the present invention is installed in the manhole 10.

As shown, the odor preventing device 20 of the present invention has a hollow funnel-shaped body 21, the lower portion of the odor blocking port for blocking the propagation of odor generated in the manhole 10 (22) is attached.

A cylindrical opening 21 ′ is formed in the lower portion of the body 21, and an annular protrusion 23 is formed outside the uppermost portion of the body 21. The annular protrusion 23 is placed in the lower portion of the manhole cover 24 in the upper jaw portion of the manhole 10 as shown, and serves to support the odor preventing device 20.

Odor blocking 22 is a substantially U-shaped bowl-shaped structure 25, one side (left side of the figure) is inclined form and the other side (right side of the figure) is a right angle, as shown At the end of the right side, a rod-shaped horizontal protrusion 26 is formed, and a weight 27 is attached to the end of the horizontal protrusion 26.

The boundary point between the right upright portion of the odor blocking opening 22 and the horizontal protrusion 26 is attached to the body 21 of the odor preventing device 20 by the support 28, and the odor blocking opening 22 is the support 28. ) Is rotatable with a point.

In addition, a protrusion 29 is attached to the left outer surface of the body 21, which sets the limit of the rotation when the odor barrier 22 rotates with the support 28 as a point. It is for. Therefore, the odor blocking tool 22 can be rotated only between the state of FIG. 2 and the state of FIG. 3.

Hereinafter, the operation principle of the odor preventing device 20 will be described. When the odor preventing device 20 is first installed in the manhole 10, the state as shown in FIG.

When rainwater or other sewage flows into the interior of the body 21 through the manhole cover 24, the water is lowered through the body 21 of the odor preventing device 20, and the body 21 Since the upper portion of the upper portion is funnel-shaped and the lower portion is narrower than the upper portion, the water pressure gradually increases as the water passes through the body 21, and the odor shielding opening 22 pushes downward by the increased water pressure. 28 is rotated as a point, and water flows into the lower part of the manhole 10 through the space created by the left end of the odor blocking port 22 falling from the protrusion 29 (see FIG. 3).

On the other hand, when the inflow of water decreases and the water pressure becomes smaller than the gravity of the weight 27, the odor preventing mechanism 22 is rotated in the opposite direction to the beginning by the gravity of the weight 27 to return to the state of FIG. will be.

Then, even when the water pressure is weakened and the odor blocking device 22 returns to its original position, some water is accumulated inside the odor preventing device 20, but the water is odor blocking holes 22 and the projections 29. Odors coming from the bottom of the manhole through the minute gaps that may exist between the no longer serves to prevent upward transmission. In the rainy season, since water is frequently introduced into the inside of the manhole 10, that is, the body 21 of the odor preventing device 20, the remaining water is easily replaced as described above, and in the dry season, only the odor preventing device 20 is used. By intermittently cleaning, even if the entire inside of the manhole 10 is not cleaned, the odor can be prevented from spreading to the outside.

4 shows an odor preventing device 30 according to the second embodiment of the present invention. In the odor preventing device 30 according to the second embodiment, the odor blocking device 22 according to the first embodiment is shown. The horizontal protrusions 26 of the slanted slopes 36 and the elastic body 37 between the outer wall of the body 31 of the odor preventing device 30 and the sloped protrusions 36. The weight 27 as in the first embodiment is the same as the odor preventing device 20 according to the first embodiment except that it is not installed. The elastic body 37 is initially installed in a relaxed state.

Therefore, when rainwater or the like flows through the manhole cover into the body 31 of the odor preventing device 30 according to the second embodiment, the odor blocking port 32 rotates in a state similar to that of FIG. At this time, the elastic body 37 is contracted between the outer wall of the body 31 and the slope projection 36, the inflow of water is reduced so that the water pressure is less than the restoring force of the elastic body 37, the elastic body 37 is relaxed by the restoring force While the odor blocking port 32 is returned to the position of FIG.

5 schematically shows an odor preventing device 40 according to a third embodiment of the present invention.

The odor preventing device 40 according to the third embodiment has a body 41 having the same shape as the bodies 21 and 31 of the odor preventing devices 20 and 30 according to the first and second embodiments described above. The odor blocking port 43 in the form of a dish is fixed to the lower side, and a plurality of water passages (not shown) are formed in the cylindrical portion 44 below the body 41.

Thus, when rainwater or other sewage flows into the interior of the body 41 through the manhole cover, the water exits the body 41 through the water passages in the cylindrical portion 44 of the body 21 to form a dish. The odor blocking port 43 is accumulated on the surface.

When the inflow of water increases and the water surface at the odor blocking port 43 becomes higher than the height of the outer wall of the odor blocking port 43, the amount of water is separated from the odor blocking port 43 to the inside of the manhole 10. After being introduced, it is sent to a sewage treatment plant through a drain hole in the manhole 10.

That is, the odor blocking port 43 is always standing as much water as the height of the maximum outer wall, this water serves to prevent the odor coming from the bottom of the manhole is no longer transferred upwards. In the rainy season, since water is frequently introduced into the inside of the manhole 10, that is, the body 41 of the odor preventing device 40, the water accumulated in the odor blocking port 43 is easily replaced as described above. By cleaning only the odor preventing device 40 intermittently, even if the entire inside of the manhole 10 is not cleaned, it is possible to surely prevent the odor from propagating to the outside.

And, in the above described as forming a water port in the lower cylindrical portion 44 of the funnel-shaped body 41, but make the body 41 in the form of only V-shaped without the lower cylindrical portion, having a constant interval It is a matter of course that the connection between the body 41 and the odor shielding opening 43 with a plurality of support rods, such that water is allowed to escape between the support rods, of course.

6 schematically shows an odor preventing device 50 according to a fourth embodiment of the present invention. The body 51 of the odor preventing device 50 according to the fourth embodiment is the body 21, 31 (of the odor preventing device 20, 30, 40 according to the first to third embodiments described above). Similar to 41), the end of the body 51 is bent upward to form an approximately U shape.

In addition, the upper surface of the opening 54 formed in the lower portion of the body 51 is a conical odor blocking opening 53 with a bottom surface is provided at a distance from the body 51, the odor blocking opening 53 It is fixed to the body 51 by the support bar (55).

Accordingly, water introduced into the body 51 through the manhole cover passes between the odor blocking port 53 and the support rod 55 attached between the body 51 and the manhole through the opening 54. To get out.

That is, the water of a predetermined height is always kept in the U-shaped lower portion of the body 51, and the bottom of the conical odor blocking port 53 is always immersed in the water, so that the odor coming from the lower part of the manhole is the aforementioned water. Will no longer be conveyed upwards. In the rainy season, since water is frequently introduced into the inside of the manhole 10, that is, the inside of the body 51, water accumulated in the U-shaped lower part is easily replaced as described above, and the dry season intermittently cleans the lower part of the body 51. By doing so, even if the entire inside of the manhole 10 is not cleaned, odors can be reliably prevented from spreading to the outside.

Since the present invention has a structure as described above, it is a useful invention that can effectively block the transmission of odor emitted from the inside of the manhole to the outside of the manhole through the manhole cover.

Claims (6)

A funnel-shaped body in which a hollow cylindrical substructure is integrally attached to the bottom of the hollow V-shaped superstructure so that the diameter gradually decreases downwards; An annular protrusion protruding outward from the top of the upper structure to be placed directly under the manhole cover; A support attached to an outer surface of the body, Odor blocking sphere that can rotate by using the support as a point (支點), It is composed of a return device provided near one end of the odor blocking port, When the water flowing through the manhole cover passes through the body rotates in the direction in which the odor blocking opening is opened by the water pressure, When the water pressure is reduced, the odor blocking port is rotated in the direction of closing by the action of the return device, characterized in that to return to the original position, Odor prevention device for sewer manhole. The sewer manhole according to claim 1, wherein the return device is a weight of weight, and when the hydraulic pressure decreases, the return device rotates in a direction in which the odor blocking port is closed by gravity of the weight. Odor prevention device. The odor preventing device for sewer manhole according to claim 1, wherein the return device is an elastic body, and when the hydraulic pressure decreases, the return device is rotated in a direction in which the odor blocking port is closed by a restoring force of the elastic body. The odor for sewer manholes according to any one of claims 1 to 3, wherein a protrusion for adjusting a rotation range of the odor blocking port is further attached to an outer wall of the body opposite to the return device. Prevention device. Hollow V-shaped body that gradually decreases in diameter as it goes down, An annular protrusion protruding outward from the top of the body to be placed directly under the manhole cover, The outer wall is higher than the floor in the form of a smell block, It has a hole or gap through which the water introduced through the manhole cover can pass and consists of a connecting device for coupling the body and the odor blocking sphere Characterized in that, the odor prevention device for sewer manhole. As it goes down downward, the diameter gradually decreases, and the end is bent upward, so that the hollow body having a substantially U-shaped cross section, An annular protrusion protruding outward from the top of the body to be placed directly under the manhole cover; Conical odor cutout with a lower opening, It has a hole or gap through which the water introduced through the manhole cover can pass and consists of a connecting device for coupling the body and the odor blocking sphere Characterized in that, the odor prevention device for sewer manhole.