KR102669508B1 - Apparatus for collecting trash with preventing backflow of foul smell for rainwater - Google Patents

Abstract

The present invention includes a casing having a bottom defining an internal space and a drain formed in the bottom; a first odor prevention module disposed in the interior space to close the drain hole to prevent backflow of odor through the drain hole; The first odor prevention module is formed to extend along the direction in which the first odor prevention module floats due to the buoyancy of rainwater flowing into the interior space to guide the rise of the first odor prevention module and filter out foreign substances flowing mixed with the rainwater. filtration module; And a blocking module disposed on the outside of the filtration module to surround the filtration module and configured to block the foreign substances from accessing the first odor prevention module through the filtration module. Provide a collection device.

Description

Odor removal type foreign matter collection device for rainwater {APPARATUS FOR COLLECTING TRASH WITH PREVENTING BACKFLOW OF FOUL SMELL FOR RAINWATER}

The present invention relates to a device for filtering rainwater and sending it to a sewer while collecting foreign substances and preventing odor backflow from the sewer.

Typically, rain gutters are installed at the edges of city roads to catch rainwater flowing down from the road toward the edges. Rainwater gutters are mainly installed adjacent to the boundary stone that forms the boundary between the roadway and the sidewalk. Rainwater gutters are covered with grating that allows rainwater to pass through but does not allow vehicle wheels or people's feet to escape.

Rain gutters collect rainwater from the driveway and direct it to an underground sewer pipe. Therefore, when rain falls on the driveway and sidewalk, the rainwater collects at the edge of the road, passes through the grating, and flows into the rain gutter. Afterwards, the rainwater flows into a sewer pipe connected to a rain gutter.

Sewage pipes are always full of bad smells because not only rainwater but also various household sewage such as discharge water from kitchens and bathrooms joins the pipes. When domestic sewage is discharged from a large building, the inside of the sewer pipe becomes more and more smelly. This odor flows back into the outside air through the rainwater drain, causing discomfort to nearby passers-by and residents.

As a device to prevent backflow of odor, an opening and closing device installed inside a rainwater gutter that opens when rainwater flows down and closes by elastic force when rainwater does not flow down has been proposed. These devices malfunction when foreign substances, such as tree branches or stones, get caught in the opening when rainwater flows down, causing the opening to not close even if it is not raining. As a result, there is a problem in that the odor is refluxed as is, so it cannot be used in practice.

Additionally, the drain of the rain gutter may be blocked by foreign substances. To improve this, foreign substances in the rainwater gutter must be cleaned frequently. Alternatively, an additional net may be installed on the grating to prevent even small-sized foreign substances from entering the rainwater gutter. However, according to this method, a problem occurs in which the rainwater drain does not function properly due to the grating becoming clogged during heavy rainfall such as during the rainy season.

The above-mentioned background technology is technical information that the inventor possessed for deriving the embodiments of the present invention or acquired during the derivation process, and cannot necessarily be said to be known art disclosed to the general public before the present application.

One object of the present invention is to provide a rainwater odor removal type foreign matter collection device that can normally perform the functions of filtering rainwater and preventing odor backflow despite foreign substances such as tree branches flowing in with rainwater.

Another object of the present invention is to provide a rainwater odor-removing foreign matter collection device that drains rainwater normally even when a large amount of foreign matter flows in and minimizes the number of disposals of collected foreign substances.

An odor-removing foreign matter collection device for rainwater according to an aspect of the present invention for realizing the above-described object includes a casing having a floor defining an internal space and a drain formed in the floor; a first odor prevention module disposed in the interior space to close the drain hole to prevent backflow of odor through the drain hole; The first odor prevention module is formed to extend along the direction in which the first odor prevention module floats due to the buoyancy of rainwater flowing into the interior space to guide the rise of the first odor prevention module and filter out foreign substances flowing mixed with the rainwater. filtration module; and a blocking module disposed on the outside of the filtration module to surround the filtration module and configured to block foreign substances from accessing the first odor prevention module through the filtration module.

Here, the first odor prevention module is located within the blocking module and may be formed to have a spherical shape.

Here, the filtration module may include a first wall portion having a cylindrical shape and having a hole through which the rainwater passes.

Here, the filtration module may include a first ceiling portion whose cross-sectional area increases in a direction toward the drain.

Here, the blocking module may have a height smaller than the filtration module along the floating direction.

Here, the blocking module includes a second wall portion disposed to surround the filtration module; And it may include a second ceiling part connected to the upper part of the second wall part and arranged to cover the space between the second wall part and the filtration module.

Here, the second wall portion may be formed to transmit the rainwater.

Here, the second ceiling part may include a donut-shaped plate.

Here, the blocking module may further include a spacer connected to a lower portion of the second wall portion to space the second wall portion from the floor.

Here, a second odor prevention module that prevents backflow of the odor through the drain may be further included prior to the first odor prevention module.

Here, the second odor prevention module includes a closing unit formed to correspond to the drain hole; and a weight connected to the closing unit, wherein the closing unit has an open posture in which the drain is opened by the weight of rainwater flowing into the interior space and a closed posture that blocks the drain by the weight of the weight. It can be formed to rotate between livers.

Here, the closing unit may be rotatably installed in the casing.

Here, the closing unit may be a plate member or a spherical member.

A device for filtering foreign substances and preventing odor backflow according to another aspect of the present invention has a first operating state in which the rainwater floats due to the buoyancy of rainwater, opens a drain, and allows the rainwater to drain through the drain, and descends by gravity. a first odor prevention module configured to switch between a second operating state that closes the drain to prevent backflow of odor through the drain; a filtration module configured to guide the movement of the first odor prevention module between the first operating state and the second operating state and filter foreign substances flowing in the rainwater; and a blocking module disposed on the outside of the filtration module to surround the filtration module and configured to block foreign substances from accessing the first odor prevention module through the filtration module.

Here, the filtration module includes: a first wall portion having a cylindrical shape and having a hole through which the rainwater passes; and a first ceiling portion covering an upper portion of the first wall portion, wherein the blocking module includes: a second wall portion disposed to surround the first wall portion; And it may include a second ceiling part connected to the upper part of the second wall part and formed to cover the space between the second wall part and the first wall part.

Here, the blocking module may have a height smaller than that of the filtration module along the direction in which the first odor prevention module moves between the first operating state and the second operating state.

According to the rainwater odor removal type foreign matter collection device according to the present invention configured as described above, the filtration module filters foreign substances, guides the first odor prevention module to move to open and close the drain, and is surrounded by a blocking module to remove foreign substances. 1 Since the odor prevention module is protected from foreign substances, the rainwater filtration and odor backflow prevention functions can be performed normally despite foreign substances such as tree branches flowing in with the rainwater.

In addition, since the filtration module has a sufficiently larger size than the first odor prevention module along the height direction, rainwater can be drained normally even when a large amount of foreign substances are introduced. Disposal of foreign substances filtered and collected within the casing may be sufficient once or twice a year.

Figure 1 is an assembled perspective view of a rainwater odor removal type foreign matter collection device 100 according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view of the main components of the device 100 of FIG. 1.
FIG. 3 is a cutaway perspective view showing the first operating state of the device 100 of FIG. 1.
FIG. 4 is a cutaway perspective view showing the second operating state of the device 100 of FIG. 1.
Figure 5 is an assembled perspective view of a rainwater odor removal type foreign matter collection device 100' according to another embodiment of the present invention as seen from the bottom.
FIG. 6 is a cutaway perspective view showing the device 100' of FIG. 5 in an open position.
FIG. 7 is a cutaway perspective view showing the device 100' of FIG. 5 in a closed position.
FIG. 8 is a cutaway perspective view showing the closed position of the device 100” according to a modified example of the device 100′ of FIG. 5.
Figure 9 is a cross-sectional view showing the installation state of the foreign matter filtration and odor backflow prevention device 200 according to another embodiment of the present invention.

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

The present invention is not limited to the embodiments disclosed below, but may be subject to various changes and may be implemented in various different forms. Only this example is provided to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention. Therefore, the present invention is not limited to the embodiments disclosed below, but substitutes or adds to the configuration of one embodiment and the configuration of another embodiment, as well as all changes and equivalents included in the technical spirit and scope of the present invention. It should be understood to include substitutes.

The attached drawings are only for easy understanding of the embodiments disclosed in the present specification, and the technical idea disclosed in the present specification is not limited by the attached drawings, and all changes and equivalents included in the spirit and technical scope of the present invention are not limited to the attached drawings. It should be understood to include water or substitutes. In the drawings, components may be expressed exaggeratedly large or small in size or thickness for convenience of understanding, etc., but the scope of protection of the present invention should not be construed as limited due to this.

The terms used in this specification are only used to describe specific implementations or examples, and are not intended to limit the invention. And singular expressions include plural expressions, unless the context clearly dictates otherwise. In the specification, terms such as ~include, ~consist of, etc. are intended to designate the presence of features, numbers, steps, operations, components, parts, or a combination thereof described in the specification. That is, in the specification, terms such as ~include, ~consist of, etc. should be understood as not precluding the existence or addition possibility of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

Terms containing ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

When a component is said to be "connected/connected" or "connected" to another component, it may be directly connected/connected to that other component, but there may be other components in the middle. It must be understood that it may exist. On the other hand, when it is mentioned that a component is “directly connected/connected” or “directly connected” to another component, it should be understood that there are no other components in between.

When a component is referred to as being "on top" or "below" another component, it should be understood that not only is it placed directly on top of the other component, but there may also be other components in between. .

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the technical field to which the present invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted in an ideal or excessively formal sense unless explicitly defined in the present application. No.

FIG. 1 is an assembled perspective view of an odor-removing foreign matter collection device 100 for rainwater according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of the main components of the device 100 of FIG. 1.

Referring to these drawings, the device 100 may include a casing 110, a filtration module 130, a first odor prevention module 150, and a blocking module 170.

The casing 110 accommodates the filtration module 130 and the like and also receives rainwater. The casing 110 may be sized to be inserted into a rain gutter (RC, see FIG. 5) installed at the edge of the road. The body 111 of the casing 110 may form an internal space with an open top. The body 111 may have a generally rectangular parallelepiped shape, but is not limited thereto. In this embodiment, the lower width W1 of the body 111 may be smaller than the upper width W2. A handle 119 may be installed in the internal space. The operator can carry the device 100 by holding the handle 119 and place it in a rainwater catchment (RC).

The filtration module 130 is configured to filter foreign substances mixed in rainwater flowing into the internal space. The foreign substances may be various substances that fall on the road, such as leaves, tree branches, gravel, and other trash. The filtration module 130 may be formed to extend along the height direction of the body 111. Foreign substances filtered by the filtration module 130 may be collected in the internal space. Accordingly, the casing 110 also serves as a foreign matter collection container.

The filtration module 130 may specifically include a first wall portion 131, a first ceiling portion 133, a fastening portion 135, and a first spacer 137.

The first wall portion 131 may have a generally cylindrical shape and may be arranged along the height direction. The first wall portion 131 may have a shape extending along the height direction while having substantially the same diameter. Additionally, the height of the first wall portion 131 may be greater than the diameter.

The first ceiling portion 133 is formed to cover the open upper portion of the first wall portion 131. The first ceiling portion 133 has a shape whose cross-sectional area becomes wider toward the bottom, so that foreign substances falling from the top can be prevented from accumulating on it. In this embodiment, the first ceiling portion 133 is illustrated to have a hemispherical shape, but the present invention is not limited thereto. The first ceiling portion 133 may have, for example, a cone shape.

Holes 131a and 133a may be formed in the first wall 131 and/or the first ceiling 133 to allow rainwater (and small-sized foreign substances) to pass through. The holes 131a and 133a can be made in various ways, such as by perforating a plate or by weaving wires to create a net. On the other hand, if the first wall portion 131 and the first ceiling portion 133 are made of a porous material and the porous material has a hole of a size sufficient to transmit rainwater, the hole is the same as the previous holes 131a and 133a. It will be able to function as.

The fastening portion 135 is configured to fasten the first wall portion 131 (and the first ceiling portion 133) to the body 111, specifically the floor 112 (see FIG. 3). The fastening part 135 may be, for example, a bracket extending outward from the first wall 131 and a screw inserted into the bracket and the body 111. Alternatively, the fastening portion 135 may be formed in a hook shape, and the body 111 may be provided with a corresponding locking protrusion.

The first spacer 137 is configured to space the lower end of the first wall portion 131 from the floor 112. A space (gap) through which small foreign substances can pass may be formed between the bottom 112 and the first wall 131 by the first spacer 137. Here, small foreign substances are foreign substances of a size that do not cause problems even if they pass through the drain 115 (see FIG. 3), and may be, for example, fine sand.

The first odor prevention module 150 is configured to control the drain 115 while moving in the internal space by the action of buoyancy and gravity. The first odor prevention module 150 is movably disposed within the filtration module 130. The first odor prevention module 150 may have a ball shape, for example. The shape of the first odor prevention module 150 is not limited thereto, and any shape is possible as long as it can open and close the drain 115 under the action of buoyancy and gravity. The first odor prevention module 150 is illustrated as being solid, but may also be formed in a hollow form.

The blocking module 170 is configured to surround the filtration module 130 to block foreign substances from accessing the first odor prevention module 150. The blocking module 170 is disposed outside the filtration module 130. The blocking module 170 may specifically include a second wall 171, a second ceiling 173, a floor 175, and a second spacer 177.

The second wall portion 171 may have a cylindrical shape similar to the first wall portion 131. Compared to the first wall portion 131, the second wall portion 171 may have a larger diameter but a lower height. The second wall portion 171 may have a hole 171a through which rainwater passes, similar to the first wall portion 131. The hole 171a may have the same size as the previous holes 131a and 133a, or may have a different size depending on the case. For example, the former may be formed larger than the latter.

The second ceiling portion 173 covers the space between the second wall portion 171 and the first wall portion 131. The second ceiling portion 173 may be connected to the upper part of the second wall portion 171. The second ceiling portion 173 may be a generally donut- or ring-shaped plate. The second ceiling portion 173 has a plate shape and can block small foreign substances from entering the gap between the first wall portion 131 and the second wall portion 171. Alternatively, if necessary, the second ceiling portion 173 may also have a hole similar to the hole 171a of the second wall portion 171.

The bottom portion 175 may be connected to the lower portion of the second wall portion 171. The bottom portion 175 may also be a donut-shaped plate similar to the second ceiling portion 173. The bottom portion 175 may regulate the position of the second wall portion 171 relative to the first wall portion 131 to maintain a constant distance from the first wall portion 131 .

The second spacer 177 is configured to space the second wall portion 171 or the bottom portion 175 from the floor 112. The second spacer 177 may be connected to the lower part of the second wall portion 171. The specific configuration of the second spacer 177 may be substantially the same as that of the first spacer 137.

FIG. 3 is a cutaway perspective view showing the first operating state of the device 100 of FIG. 1, and FIG. 4 is a cutaway perspective view showing the second operating state of the device 100 of FIG. 1.

Referring further to the drawings, a concave portion 113 may be formed in the bottom 112 of the body 111. A drain 115 may also be formed in the center of the recess 113. According to this structure, rainwater and small foreign substances do not accumulate on the floor 112 and can be discharged from the internal space through the recess 113 and the drain 115.

A spacer 117 may also be installed on the bottom of the body 111. The spacer 117 separates the bottom 112 of the casing 110 from the bottom of the rain gutter RC, allowing the concave portion 113 to maintain its original shape.

Compared to the height H1 of the filtration module 130, the height H2 of the blocking module 170 may be formed to be low. The blocking module 170 is used to block branches, etc. that approach the first odor prevention module 150 and obstruct the vertical movement of the first odor prevention module 150. Any height that covers the range of movement is sufficient. Due to the height of the blocking module 170 being lower than that of the filtration module 130, restrictions on the flow of rainwater or small foreign substances can be minimized. Considering this, the height H2 of the blocking module 170 may be half of the height H1 of the filtration module 130, or less.

If the filtration module 130 has a sufficient height, the risk of all holes 131a and 133a being blocked by foreign substances can be reduced. Even if the upper hole of the filtration module 130 is blocked by falling foreign substances, rainwater can be drained through the lower hole. In addition, if tree branches that can restrict the movement of the first odor prevention module 150 are preferentially caught in the upper part of the filtration module 130, the first odor prevention module operating in the lower area of the filtration module 130 ( 150) may not be affected by it. To this end, the filtration module 150 may have a length two to five times that of the first odor prevention module 150 along the direction of its movement. As the filtration module 130 has a sufficient length, the holes 131a and 133a through which rainwater passes through the filtration module 130 may remain even if a large amount of foreign matter is present. As a result, foreign matter collected within device 100 may not need to be disposed of frequently.

The first odor prevention module 150 moves along the extension direction of the filtration module 130, specifically the height direction. Specifically, the first odor prevention module 150 may float due to buoyancy caused by rainwater flowing into the internal space (first operating state, see FIG. 3). The first odor prevention module 150 can generally float within the height H2 of the blocking module 170 and open the drain 115. In that case, rainwater and small foreign substances can be discharged from the internal space through the drain 115. When the discharge of rainwater is completed, the first odor prevention module 150 can be lowered by gravity and close the drain 115 (second operating state, see FIG. 4). As the drain 115 is closed, bad odors are prevented from flowing back through the drain 115.

According to this configuration, the first odor prevention module 150 allows drainage of rainwater in the first operating state and prevents backflow of odor in the second state. Movement of the first odor prevention module 150 between the first operating state and the second operating state may be guided by the filtration module 130 that filters foreign substances. Smooth movement of the first odor prevention module 150 within the filtration module 130 can be guaranteed by the blocking module 170. The blocking module 170 blocks tree branches, etc. from approaching the filtration module 130 to prevent them from getting caught on the filtration module 130 and restricting the movement of the first odor prevention module 150.

Having the filtration module 130 of sufficient length may also be helpful for smooth operation of the first odor prevention module 150. Additionally, due to the sufficient length of the filtration module 130, rainwater can be drained through a portion of the filtration module 130 that is not clogged with foreign substances, even if many foreign substances flow into the internal space. Over time, many foreign substances may be collected in the internal space. Managers only need to dispose of collected foreign substances once or twice a year. In that case, the administrator can easily handle the device 100 using the handle 119.

Figure 5 is an assembled perspective view of a rainwater odor removal type foreign matter collection device 100' according to another embodiment of the present invention as seen from the bottom. In the device 100', components that are the same as those of the previous device 100 are given similar reference numbers, and specific descriptions are replaced with those in the previous embodiment.

Referring to this drawing, the device 100' further includes a second odor prevention module 190' in addition to the first odor prevention module 150 (see FIG. 6). The second odor prevention module 190' is used together with the first odor prevention module 150 to double prevent odor from flowing back from the sewer.

If the first odor prevention module 150 is located in the interior space, the second odor prevention module 190' is located outside the interior space. Specifically, the second odor prevention module 190' may be installed on the lower side of the floor 112 (see FIG. 4 above). To install the second odor prevention module 190', a communication pipe 118 may be installed in the drain 115. The communication pipe 118 may be arranged to protrude downward from the floor 112.

The second odor prevention module 190' may be composed of a closing unit 191' and a weight 195'. The closing unit 191' corresponds to the drain 115, more directly to the opening of the communication pipe 118. The closing unit 191' is a plate-shaped member and may have a generally disk shape. The weight 195' is connected to the closing unit 191'. The closing unit 191' and the weight 195' may be rotatably installed on the communication pipe 118 by the rotation axis 197'.

The operation of the second odor prevention module 190' will be described with reference to FIGS. 6 and 7. FIG. 6 is a cutaway perspective view showing the device 100' of FIG. 5 in an open posture, and FIG. 7 is a cutaway perspective view showing the device 100' of FIG. 5 in a closed posture.

Referring to FIG. 6, the first odor prevention module 150 rises due to the buoyancy of rainwater flowing into the internal space. In addition, the closing unit 191' is forced downward by the weight of the rainwater. By the force, the closing unit 191' rotates counterclockwise in the drawing and opens the drain 115 (specifically, the opening of the communication pipe 118) (open position). The weight 195' also rotates counterclockwise together with the closing unit 191' due to the weight of the rainwater. In a state where both the first odor prevention module 150 and the second odor prevention module 190' allow rainwater to pass, rainwater may flow into the sewer.

Referring to Figure 7, as the rainwater drains, the buoyancy caused by the rainwater disappears. Accordingly, the first odor prevention module 150 descends and blocks the drain 115. The force of his weight also disappears as the rainwater drains away. Now, the weight of the weight 195' causes the closing unit 191' and the weight 195' to rotate clockwise. Accordingly, the closing unit 191' closes the drain 115 (closed state). In this state, the backflow of odor from the sewer is doubly prevented by the second odor prevention module 190' and the first odor prevention module 150.

FIG. 8 is a cutaway perspective view showing the closed position of the device 100” according to a modified example of the device 100′ of FIG. 5. The overall configuration of the device (100”) is generally the same as the previous device (100’), but it differs from the previous device in the specific form of the closing unit (191”).

Referring to this figure, the closure unit 191” is a spherical member. If the spherical member of the first odor prevention module 150 is located within the filtration module 150, the spherical member of the closing unit 191” is located below the communication pipe 118. The spherical members may not be in direct contact with each other through the communication pipe 118.

Figure 9 is a cross-sectional view showing the installation state of the foreign matter filtration and odor backflow prevention device 200 according to another embodiment of the present invention. In the module 200, components that are identical to those of the previous device 100 are given similar reference numbers, and specific descriptions are replaced with those in the previous embodiment.

Referring to this drawing, the module 200 does not have a configuration corresponding to the casing 110 of the preceding device 100. Instead, the filtration module 230, the first odor prevention module 250, and the blocking module 270 of the module 200 may be installed directly in the rainwater gutter (RC).

A rain gutter (RC) is generally a space in the shape of a rectangular parallelepiped and can be made of concrete. A drain (EH) is installed at the bottom of the rain gutter (RC), and the drain (EH) may be connected to a sewer pipe (SP). The top of the rain gutter (RC) may be covered by grating (G). Grating (G) allows rainwater and foreign matter to fall into the rain gutter (RC), but prevents people or vehicles from falling into the rain gutter (RC).

The filtration module 230 may be installed at the bottom of the rain gutter (RC), and the blocking module 270 may also be placed on the bottom of the rain gutter (RC) in a form surrounding the filtration module 230. The first odor prevention module 250 is located in the filtration module 230 corresponding to the drain hole (EH).

100,200: Odor removal type foreign matter collection device for rainwater
110: Casing 130,230: Filtration module
150,250: 1st odor prevention module 170,270: blocking module

Claims (16)

a casing having a bottom defining an internal space and having a downwardly sloping concave portion, and a drain formed in the concave portion;
a first odor prevention module disposed in the interior space to close the drain hole to prevent backflow of odor through the drain hole;
The first odor prevention module is formed to extend along the direction in which the first odor prevention module floats due to the buoyancy of rainwater flowing into the interior space to guide the rise of the first odor prevention module and filter out foreign substances flowing mixed with the rainwater. filtration module; and
A blocking module is disposed on the outside of the filtration module to surround the filtration module and is configured to block foreign substances from accessing the first odor prevention module through the filtration module,
The filtration module is,
a first wall portion having a hole through which the rainwater passes;
a first ceiling portion covering an upper portion of the first wall portion; and
It includes a first spacer connected to the lower part of the first wall portion to space the first wall portion from the concave portion,
The blocking module is,
a second wall portion surrounding the filtration module and formed to have a height smaller than that of the filtration module along the floating direction;
a second ceiling portion connected to an upper part of the second wall portion and being a donut-shaped plate that covers the space between the second wall portion and the first wall portion; and
A rainwater odor removal type foreign matter collection device comprising a second spacer connected to a lower portion of the second wall portion to space the second wall portion from the concave portion.
According to paragraph 1,
The first odor prevention module,
A rainwater odor removal type foreign matter collection device located within the blocking module and formed to have a spherical shape.
According to paragraph 1,
The first wall portion,
An odor-removing foreign matter collection device for rainwater that has a cylindrical shape.
According to paragraph 1,
The first ceiling portion,
A rainwater odor removal type foreign matter collection device having a shape whose cross-sectional area becomes wider in the direction toward the drain.
According to paragraph 1,
The second wall portion,
A rainwater odor removal type foreign matter collection device having a hole through which the rainwater passes.
According to paragraph 1,
The second wall portion,
A rainwater odor removal type foreign matter collection device formed to have a height of less than half the height of the filtration module along the floating direction.
According to paragraph 1,
An odor-removing foreign matter collection device for rainwater, further comprising a second odor-prevention module that prevents backflow of the odor through the drain prior to the first odor-prevention module.
In clause 7,
The second odor prevention module,
a closing unit formed to correspond to the drain hole; and
comprising a weight connected to the closure unit,
The closing unit is,
A rainwater odor removal type foreign matter collection device configured to rotate between an open position in which the drain is opened by the weight of rainwater flowing into the internal space and a closed position in which the drain is blocked by the weight of the weight. delete delete delete delete delete delete delete delete

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