KR20160003793U - Stink blocking and backflow prevention apparatus for drainpipe - Google Patents

Stink blocking and backflow prevention apparatus for drainpipe Download PDF

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Publication number
KR20160003793U
KR20160003793U KR2020150002667U KR20150002667U KR20160003793U KR 20160003793 U KR20160003793 U KR 20160003793U KR 2020150002667 U KR2020150002667 U KR 2020150002667U KR 20150002667 U KR20150002667 U KR 20150002667U KR 20160003793 U KR20160003793 U KR 20160003793U
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KR
South Korea
Prior art keywords
sewage
outer frame
opening
drain pipe
discharge port
Prior art date
Application number
KR2020150002667U
Other languages
Korean (ko)
Inventor
김춘식
Original Assignee
주식회사 새온누리그린테크
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 새온누리그린테크 filed Critical 주식회사 새온누리그린테크
Priority to KR2020150002667U priority Critical patent/KR20160003793U/en
Publication of KR20160003793U publication Critical patent/KR20160003793U/en

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    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F7/00—Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools
    • E03F7/02—Shut-off devices
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F7/00—Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools
    • E03F7/02—Shut-off devices
    • E03F7/04—Valves for preventing return flow

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Sewage (AREA)
  • Sink And Installation For Waste Water (AREA)

Abstract

More particularly, the present invention relates to an apparatus for preventing odor from flowing through a drain pipe, and more particularly, to an apparatus for preventing odor from flowing into a drain pipe, The drainage port is closed so that odor and insects generated in the drainage pipe are shut off. In addition, reverse flow of the river water is prevented in case of rainy weather, and sewage is discharged through the drainage port And the sewage discharge port or the drainage port is opened to smooth drainage. [0002] The present invention relates to an apparatus for blocking a malodor of a drain pipe and a backflow prevention apparatus.
In order to achieve the above object, the present invention provides an apparatus for preventing odor blocking and backflow for a drain pipe, comprising: an outer frame formed in a shape corresponding to a shape of a drain hole formed at a distal end of a drain pipe, A plurality of partition members spaced apart from each other in the horizontal direction by a predetermined distance and forming a sewage discharge port in a space separated from each other; An opening / closing plate hinged to the inside of the outer frame for pivoting the hinge about the rotation center and opening / closing the sewage outlet, the plate having a shape corresponding to the shape of the sewage outlet; And one end portion is fixedly coupled to the front surface of the opening / closing plate and the other end portion is supported on an inner side surface of the outer frame or the partition wall member, and the opening / closing plate Wherein when the sewage is discharged through the sewage discharge port, the open / close plate is rotated forward by the water pressure of the sewage, the sewage discharge port is opened, and the sewage is discharged through the discharge outlet The opening / closing plate is rotated backward by the elastic force of the leaf spring, and the sewage discharge port is closed.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

More particularly, the present invention relates to an apparatus for preventing odor from flowing through a drain pipe, and more particularly, to an apparatus for preventing odor from flowing into a drain pipe, The drainage port is closed so that odor and insects generated in the drainage pipe are shut off. In addition, reverse flow of the river water is prevented in case of rainy weather, and sewage is discharged through the drainage port And the sewage discharge port or the drainage port is opened to smooth drainage. [0002] The present invention relates to an apparatus for blocking a malodor of a drain pipe and a backflow prevention apparatus.

Generally, a drain pipe functions to discharge household wastewater generated at home and factory wastewater from a factory or a business site.

Such a drain pipe is usually installed so as to be connected to a coast or a river, and a drain port through which sewage is discharged is exposed to the outside, which has a problem that a malodor occurs.

Especially, when the roads and walkways are formed on the coast and riverside, and the drainage pipes of the drainage pipes are exposed toward rivers and coasts, they become a bad smell to people passing through roads and walkways. In addition, pests living inside the drain pipe are leaked to the outside, causing damage to people.

In addition, there is a problem that the odor is moved to the inside of the building due to the reverse flow of the river water due to the increase of the river water level in the rainy season, and the flood damage may occur when the river water flows back into the building of the lowland center.

In addition, since the drainage pipe which meets the river side is exposed to the river, the conventional drainage pipe is exposed to the river, so that when the river flows through the cityside, there is a problem of deteriorating the beauty of the city.

In the conventional art, a plurality of vertically long vinyls are fixed to the upper part of the drain hole and the drain holes are closed by draining the lower part of the drain hole.

Such a method of covering the drain hole has a simple structure, which makes it easy to manufacture and install, is cheap in construction cost, and has a merit that some odors and pests generated inside the drain can be blocked.

However, when the wind is blown, the inside space is opened to the outside due to the influence of the wind, and the inside of the sewer can be seen, which can give an uncomfortable feeling to people passing around, and odor and pests In addition to this, the durability of the product is so short that it needs to be replaced frequently.

The object of the present invention is to provide a drainage pipe having a drainage outlet formed on an inner surface thereof and a drainage outlet formed on the inner surface of the drainage pipe so that the drainage outlet can be opened and closed The drain hole is closed to prevent bad odors and insects from occurring in the drain pipe and to prevent the reverse flow of the river water in case of rainy weather while the sewage is discharged through the drain hole, And an object of the present invention is to provide a device for preventing odor blocking and backflow prevention for a drain pipe which is provided with an opening / closing plate or an outer frame which is rotated and the drainage outlet or the drainage opening is opened to smooth drainage.

In order to achieve the above object, the present invention provides an apparatus for preventing odor blocking and backflow for a drain pipe, comprising: an outer frame formed in a shape corresponding to a shape of a drain hole formed at a distal end of a drain pipe, A plurality of partition members spaced apart from each other in the horizontal direction by a predetermined distance and forming a sewage discharge port in a space separated from each other; An opening / closing plate hinged to the inside of the outer frame for pivoting the hinge about the rotation center and opening / closing the sewage outlet, the plate having a shape corresponding to the shape of the sewage outlet; And one end portion is fixedly coupled to the front surface of the opening / closing plate and the other end portion is supported on an inner side surface of the outer frame or the partition wall member, and the opening / closing plate Wherein when the sewage is discharged through the sewage discharge port, the open / close plate is rotated forward by the water pressure of the sewage, the sewage discharge port is opened, and the sewage is discharged through the discharge outlet The opening / closing plate is rotated backward by the elastic force of the leaf spring, and the sewage discharge port is closed.

Further, according to the present invention, there is provided a malodor blocking and backflow prevention device for a drain pipe, wherein a rear end side of the open / close plate is closed so as to limit a maximum turning distance of the open / close plate to the rear when the opening / closing plate is rotated backward by an elastic force of the leaf spring And a stopper formed on the inner surface of the sewage discharge port.

Also, according to the present invention, there is provided a malodor blocking and backflow prevention device for a drain pipe, comprising: a fixing bracket fixedly installed on an upper portion of the drain hole; And a rotation bracket provided on an upper portion of the outer frame to be hinged to the fixing bracket so as to allow the outer frame to rotate in the front and rear direction and to open and close the drain port, wherein the water pressure of the sewage discharged through the drain port is constant The outer frame is rotated forward by the water pressure of the sewage, and the entire drain hole is opened.

According to the above-described configuration, the apparatus for blocking odor and preventing back flow of a drain pipe according to the present invention is constructed such that the open / close plate provided in the outer frame is rotated by the hydraulic pressure of the sewage and can open or close the sewage discharge port. Thereby preventing odors and pests generated in the inside of the drain pipe and preventing reverse flow of the river water in case of rainstorm, and when the drainage water is discharged through the drainage hole, the opening and closing plate is rotated by the water pressure of the drainage water, .

Also, according to the present invention, when the flow rate of the sewage discharged through the drain port is increased and the hydraulic pressure of the sewage rises to a certain level or more, the outer frame is rotated forward by the hydraulic pressure of the raised sewage There is an advantage that the drainage is made more smooth by opening the entire drainage hole.

In addition, according to the present invention, there is an advantage that it is possible to reduce the uncomfortable feeling of the pedestrian because it prevents the inside of the drain pipe from being visible, thereby improving a comfortable urban environment.

1 is a perspective view of a malodor blocking and backflow prevention device for a drain pipe according to an embodiment of the present invention;
2 is a front view of a malodor blocking and backflow prevention device for a drain pipe according to an embodiment of the present invention
3 is a rear view of a malodor blocking and backflow prevention device for a drain pipe according to an embodiment of the present invention
4 is a side sectional view of a malodor blocking and backflow prevention device for a drain pipe according to an embodiment of the present invention
FIG. 5 and FIG. 6 are diagrams showing operating states of a malodor blocking and backflow prevention device for a drain pipe according to an embodiment of the present invention
7 is a perspective view of a malodor blocking and backflow prevention device for a drain pipe according to another embodiment of the present invention

Hereinafter, the malodor blocking and backflow prevention device for a drain pipe according to the present invention will be described in detail with reference to the embodiments shown in the drawings.

FIG. 1 is a perspective view of a malodor blocking and backflow prevention device for a drain pipe according to one embodiment of the present invention, FIG. 2 is a front view of a malodor blocking and backflow prevention device for a drain pipe according to an embodiment of the present invention, 4 is a side sectional view of a malodor blocking and backflow preventing device for a drain pipe according to an embodiment of the present invention, and FIGS. 5 and 6 are cross-sectional views of a malodor blocking and backflow preventing device for a drain pipe according to an embodiment of the present invention. FIG. 3 is an operational state diagram of a malodor blocking and backflow prevention device for a drain pipe according to an embodiment of the present invention; FIG.

1 to 6, an apparatus 1 for preventing and blocking odor for a drain pipe according to an embodiment of the present invention includes an outer frame 10, a partition member 20, an opening and closing plate 30, a leaf spring 40 A stopper 50, a fixing bracket 60, and a rotation bracket 70. [

The outer frame 10 is installed at the end of the drain pipe P through which the sewage is discharged and has a shape such that the shape of the drain pipe D and the shape of the drain pipe D are set so as to close and close the drain pipe D formed at the end of the drain pipe P. And is formed on the front surface of the drain port (D).

The overall appearance of the malodor blocking and backflow prevention device for a drain pipe according to the present invention is determined depending on the shapes of the drain pipe P and the drain pipe D formed in the drain pipe P, And the shape of the drain port (D).

In one embodiment of the present invention, the outer frame 10 is formed in a shape of a circular plate corresponding to the shape of the drainage port D of the cylindrical drain pipe P so that it can be applied to a cylindrical drain pipe P that is mainly used at present .

A plurality of partition wall members 20 are installed inside the outer frame 10 and a plurality of sewage outlet holes 21 are formed inside the outer frame 10 by providing the partition wall member 20.

As described above, since the plurality of partition members 20 are provided inside the outer frame 10, it is possible to provide a contour structure of the malodor blocking and backflow prevention apparatus for a drain pipe according to the present invention.

As shown in FIG. 1, the outer frame 10 is formed with a hinge hole 11 for hinging the opening / closing plate 30.

The hinge holes 11 are formed by the number of the open / close boards 30 in pairs at mutually opposing positions so that the open / close board 30 can be installed in each of the plurality of the sewage discharge openings 21.

1, the hinge holes 11 formed on the upper side with respect to the horizontal direction diameter of the outer frame 10 are connected to the upper side of the lower side of the sewage outlet 21 And the hinge holes 11 formed on the lower side with respect to the horizontal direction diameter of the outer frame 10 are formed on the upper side of the sewage outlet 21 on the lower side.

The open / close board 30 is hinged to the hinge hole 11 so that the hinge can be rotated around the rotation center.

A plurality of the partition members 20 are horizontally spaced apart from each other on the inner side of the outer frame 10, and a plurality of sewage discharge openings 21 are formed in mutually spaced spaces.

The partition member 20 is installed inside the outer frame 10 and serves as a support for preventing deformation of the outer frame 10 due to external force.

The sewage discharge port 21 is formed by installing the partition member 20 in the outer frame 10 and the size and number of the partition member 20 are determined according to the number of the partition member 20 installed.

As shown in FIGS. 1 and 2, in an embodiment of the present invention, the partition member 20 is provided in the horizontal direction on the inner side of the outer frame 10, and three partition members 20 So that four sewage water outlets 21 are formed.

1, in the embodiment of the present invention, since the outer frame 10 is in the shape of a rectangular frame, a plurality of the partition members 20 are installed inside the outer frame 10 in the horizontal direction The sewage discharge ports 21 are formed in different shapes.

The opening and closing plate 30 is formed of a plate member having a shape corresponding to the shape of the sewage discharge port 21 and is hinged to the inside of the outer frame 10 so as to be pivotally rotated about the hinge, (21).

The open / close board 30 is preferably made of a synthetic resin material so that the open / close board 30 can be easily manufactured, cost-effective in manufacturing, and can be smoothly opened and closed even with a small water pressure in consideration of its weight. Among them, it is most preferable that the open / close board 30 is made of a plastic material considering durability of the open / close board 30, convenience of molding, cost, and the like.

Hinge shafts 31 are provided on both sides of the open / close board 30 in the longitudinal direction so as to be hinged to the hinge holes 11 formed in the outer frame 10.

1 and 2, the sewage discharge port 21 formed at the upper side of the outer frame 10, that is, the sewage discharge port 21 at the upper two sides, 30 are hinged to the hinge holes 11 of the outer frame 10 and the sewage outlet 21 formed at the lower side of the outer frame 10, Both sides of the upper end of the open / close board 30 are hinged to the hinge holes 11 of the outer frame 10.

As shown in FIG. 5, the upper two open / close boards 30 of the open / close board 30, which are hinged to the outer frame 10 as described above, are rotated in the forward and backward directions, And the lower two open / close plates 30 are rotated in the forward and backward directions as shown in FIG. 5, thereby opening / closing the sewage outlet 21.

The reason why the open / close board 30 is coupled with the open / close structure as described above is that, since the outer frame 10 according to one embodiment of the present invention is formed in a rectangular shape, So that both ends of the open / close board 30 are prevented from touching and interfering with the inner surface of the outer frame 10 when being hinged to the inside of the frame 10 and rotating.

In other words, in the case of the open / close board 30 installed at the upper two sewage discharge openings 21, assuming that the upper side of the open / close board 30 is hinged and the lower side is pivoted, Both ends of the opening / closing plate 30 are interfered with the inner side surface of the outer frame 10 when the lower side of the opening / closing plate 30 is rotated, because the width of the outer frame 10 of the outer frame 10 becomes narrower The sewage discharge port 21 is not properly opened.

Accordingly, in one embodiment of the present invention, the upper two side open / close boards 30 of the plurality of open / close boards 30 are rotated to open and close the sewage discharge openings 21, and the lower two open / 30 are pivoted on the lower side and are configured to open and close the sewage outlet 21.

The opening / closing plate 30 is opened stepwise from the lower part to the upper part according to the flow rate of the sewage discharged through the drain pipe (P), and smoothly discharges the sewage to the river or the sea.

The opening / closing plate 30 is further provided with a fitting hole 32 at one end of the plate spring 40 so as to be fixedly coupled.

The fitting member 32 is provided on the front surface of the opening / closing plate 30 as shown in FIG.

1, the fitting fitting 32 may be divided into two parts. Although not shown in the drawing, the fitting fitting 32 may be configured as a single unit .

2, the fitting fitting 32 may be formed at a central portion of the front face of the opening / closing plate 30. Although not shown in the drawings, the opening / (Not shown) may be provided on the front surface of the display unit 30 so as to be spaced apart from each other. That is, the fitting fittings 32 are provided by the number of the plate springs 40 provided on the front side of the opening / closing plate 30.

The plate spring 40 is installed on the front side of the opening and closing plate 30 and has one end fixedly connected to the front face of the opening and closing plate 30 and the other end fixed to the outer frame 10 or the partition member 20 , And the opening / closing plate (30) is elastically supported in a direction to close the sewage outlet (21).

1 and 5, the leaf spring 40 may be provided on the opening / closing plate 30 so that the opening / closing plate 30 can rotate in the forward and backward directions about the hinge, And the other end is fixedly coupled with the fitting hole 32 formed on the front surface of the opening / closing plate 30, and the other end is fixed to the partition member 20 And is installed to be supported on the inner side.

The leaf spring 40 may be curved in the width direction so as to have an outwardly convex arc-shaped cross section to increase elastic restoring force and durability of the leaf spring 40.

1, the leaf spring 40 may be provided at the center of the front surface of the opening / closing plate 30 in the longitudinal direction of the front surface of the opening / closing plate 30, A plurality of longitudinally extending end portions or longitudinally extending portions of the opening and closing plate 30 may be provided.

The position and the number of the fitting joints 32 are determined according to the position and the number of the leaf springs 40 provided on the opening and closing plate 30. [

The stopper 50 is provided on the opening / closing plate 30 so as to limit the maximum turning distance of the opening / closing plate 30 to the rear when the opening / closing plate 30 is rotated backward by the elastic force of the leaf spring 40. [ Is formed on the inner surface of the sewage discharge port (21).

That is, when the opening / closing plate 30 is rotated backward due to the elastic force of the leaf spring 40, the stopper 50 is positioned at a position where the opening / closing plate 30 stands vertically, Is stopped and fixed at a position where the sewage discharge port 21 is completely closed.

The stopper 50 is also in close contact with a rear edge of the opening and closing plate 30 and blocks a minute gap formed between the opening and closing plate 30 and the sewage outlet 21. [

In the apparatus 1 for preventing and blocking malodors for a drain pipe according to one embodiment of the present invention configured as described above, when the sewage flowing through the drain pipe P is discharged to the outside such as a river or a sea through the sewage discharge port 21 The open / close plate 30 is rotated forward by the water pressure of the sewage to open the sewage discharge port 21 and when the sewage is not discharged through the sewage discharge port 21, And is rotated backward by the elastic force of the drain pipe 40 to keep the sewage outlet 21 in a closed state.

Meanwhile, the malodor blocking and backflow prevention device for a drain pipe according to the present invention further includes the fixing bracket 60 and the rotation bracket 70 as described above.

The fixing bracket 60 is fixed to the upper part of the drainage port D so that the outer frame 10 can be installed on the front surface of the drainage port D of the drainage pipe P.

The fixing bracket 60 is formed so as to be coupled to the hinge 71 with the rotation bracket 70 described later.

The pivotal bracket 70 is provided on the outer frame 10 so that the outer frame 10 is rotated in the front and rear direction and can open and close the drain port D and the hinge 71 is fixed to the fixing bracket 60, .

6, the rotation bracket 70 is coupled to the hinge 71 by the fixing bracket 60 so that the outer frame 10 is rotatable to open the entirety of the drain port D .

According to the configuration of the fixing bracket 60 and the pivotal bracket 70 as described above, the malodor blocking and backflow prevention device for a drain pipe according to the present invention is characterized in that when the water pressure of the sewage discharged through the drain port (D) The outer frame 10 is rotated forward by the water pressure of the sewage to open the entirety of the drain port D. [

That is, when the sewage flowing through the water pipe P is abruptly increased, it is difficult to discharge the sewage only through the sewage outlet 21 opened by the opening / closing plate 30. In this case, the outer frame 10 Is turned and the entire drainage port (D) is opened to make drainage more smooth.

7 is a perspective view of a malodor blocking and backflow prevention device for a drain pipe according to another embodiment of the present invention.

Referring to FIG. 7, the outer frame 10 is formed in a rectangular shape so as to correspond to a rectangular drain pipe P, according to another embodiment of the present invention.

That is, according to another embodiment of the present invention, the malodor blocking and backflow prevention device 2 for a drain pipe is constructed such that the outer frame 10 'is formed in a shape of the outer frame 10, And all of the other technical configurations are the same, and the coupling relation and operation among the above configurations are also the same, so that a detailed description will be omitted.

As described above, the malodor blocking and backflow prevention device for a drain pipe according to the present invention can be implemented in various forms in accordance with the shapes of the drain pipe (P) to be applied and the drain hole (D) formed in the drain pipe (P).

In the malodor blocking and backflow prevention apparatuses 1 and 2 according to the present invention configured as described above, the opening and closing plate 30 provided on the outer frame 10 and 10 'is rotated by the water pressure of the sewage, And is configured to open or close the discharge port 21. Normally, the sewage discharge port 21 is closed to block offensive odors and pests generated in the discharge pipe P, and reverse flow of the river water is prevented during rainy days, When the sewage is discharged through the drain port (D), the open / close board (30) is rotated by the water pressure of the sewage water and the sewage discharge port (21) is opened to smooth the drainage. When the flow rate of the discharged sewage is rapidly increased and the hydraulic pressure of the sewage rises to a certain level or more, the outer frame 10 is turned forward by the hydraulic pressure of the raised sewage, and the entire drainage port D is opened, It is possible to make Comunidad smoothly.

The malodor blocking and backflow prevention device for a drain pipe described above and shown in the drawings is only an embodiment for carrying out the present invention and should not be construed as limiting the technical idea of the present invention. The scope of protection of the present invention is defined only by the matters set forth in the following claims, and the embodiments improved or changed without departing from the gist of the present invention are obvious to those having ordinary skill in the art to which the present invention belongs It is considered to be within the scope of protection of this invention.

1, 2 Odor blocking and backflow prevention device for drain pipe
10, 10 'outer frame
11 Hinge hole
20 partition member
21 sewage outlet
30 opening and closing plate
31 Hinge axis
32 fittings
40 leaf spring
50 stopper
60 Retaining bracket
70 Rotating bracket
71 Hinge
P water pipe
D outlet

Claims (3)

An outer frame (10) formed in the shape corresponding to the shape of the drain hole formed at the end of the drain pipe and installed on the front surface of the drain hole;
A partition member 20 disposed at an inner side of the outer frame 10 so as to be horizontally spaced apart from each other by a predetermined distance and forming a sewage outlet 21 in a spaced-apart space; And
A hinge member hinged to the inside of the outer frame 10 so as to be rotated around the hinge and to open and close the sewage outlet 21, A plate 30; And
One end portion of which is fixedly coupled to the front face of the opening and closing plate 30 and the other end portion is supported on the inner side face of the outer frame 10 or the partition member 20 , And a leaf spring (40) for elastically supporting the opening / closing plate (30) in a direction to close the sewage outlet (21)
When the sewage is discharged through the sewage discharge port 21, the open / close plate 30 is rotated forward by the water pressure of the sewage to open the sewage discharge port 21, and the sewage is discharged through the sewage discharge port 21 , The opening / closing plate (30) is rotated backward by the elastic force of the leaf spring (40) and closes the sewage discharge port (21). The method according to claim 1,
When the open / close board 30 is rotated backward due to the elastic force of the leaf spring 40, the open / Further comprising a stopper (50) formed on the inner surface of the tub (21). 3. The method according to claim 1 or 2,
A fixing bracket 60 fixedly installed on the upper part of the drain hole; And
And a rotating bracket 70 provided on the outer frame 10 and hinged to the stationary bracket 60 so that the outer frame 10 is rotated in the front and rear direction to open and close the drain hole,
Wherein when the water pressure of the sewage discharged through the drain hole rises to a predetermined level or higher, the outer frame (10) is rotated forward by the water pressure of the sewage, and the drain hole is opened as a whole. Device.
KR2020150002667U 2015-04-23 2015-04-23 Stink blocking and backflow prevention apparatus for drainpipe KR20160003793U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2020150002667U KR20160003793U (en) 2015-04-23 2015-04-23 Stink blocking and backflow prevention apparatus for drainpipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2020150002667U KR20160003793U (en) 2015-04-23 2015-04-23 Stink blocking and backflow prevention apparatus for drainpipe

Publications (1)

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KR20160003793U true KR20160003793U (en) 2016-11-02

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102013285B1 (en) * 2019-01-08 2019-08-22 (주)가나엔지니어링 Improved Scum Removing Apparatus Function with Preventing from Reverse Flowing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102013285B1 (en) * 2019-01-08 2019-08-22 (주)가나엔지니어링 Improved Scum Removing Apparatus Function with Preventing from Reverse Flowing

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