WO2016010315A1

WO2016010315A1 - Non-powered backflow prevention device

Info

Publication number: WO2016010315A1
Application number: PCT/KR2015/007237
Authority: WO
Inventors: 김성태; 김종선
Original assignee: 김성태
Priority date: 2014-07-14
Filing date: 2015-07-13
Publication date: 2016-01-21

Abstract

The present invention relates to a non-powered backflow prevention device capable of preventing the backflow of sewage without using power by being installed at a sewer pipe or a floodgate of a link canal or the like, and comprises: a body part having a through-hole of which an inlet, through which sewage inflows, is arranged at the front part and of which an outlet, through which sewage is discharged, is provided at the rear part; and an opening/closing door part rotatably hinge-coupled to one side of the outlet of the body part so as to open and close the outlet of the body part, wherein the inlet of the body part is cut in a direction perpendicular to the central axis of the body part facing from the inlet to the outlet, the outlet of the body part is obliquely cut at a predetermined angle with respect to the central axis of the body part and of which a coupling member having a plurality of coupling holes can be arranged at the edge of the inlet of the body part.

Description

Non-powered backflow prevention device

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a non-powered backflow prevention device, and to a non-powered backflow prevention device that can be installed in a sewer pipe or a hydrologic gate of an agricultural waterway to prevent backflow of sewage with no power.

Generally, the sewage discharged to various drains such as residential facilities, agricultural facilities, public facilities, and industrial facilities is collected in the basin sewage pipes, sewage pipes or sewage pipes, and mains sewage pipes, and discharged directly to the rivers and the seas, or to sewage treatment plants. It is collected in sewage treatment facilities such as sewage treatment facilities and discharged to public waters such as rivers and the sea.

The standards of the basic sewage pipe, the sewer main pipe, and the trunk sewage pipe installed in such a sewage treatment facility are formed to an appropriate standard capable of sufficiently processing the normal sewage discharges expected at the facility or place.

At the time of discharge of sewage, basic sewage, sewer mains and trunk sewers normally discharge sewage in the form of free water channels, but in some areas temporary storms or heavy rains have caused the inflow to be larger than the sewage treatment capacity per unit time. When it does, it becomes a watering canal that discharges sewage in full water without free water.

Therefore, the inflow water that has not been discharged into the sewer pipe overflows to the road or the ground surface, and at the same time, the discharge pressure of the sewage pipe increases and flows back to the basic sewage pipe in a low-area area, and is a house, public facility, and industry as a sewage discharger. Backwater into the drains and catchments of the facility will cause flooding damage, and roads, septic tanks and other facilities will also be flooded.

In addition, when the trunk sewer pipe becomes irrigation due to heavy rain or heavy rainfall in one region, or when the water level of the river rises for a short time, when the water level of the river rises for a long time due to the rainy season, the sea water level of the sea Even if it rises, sewage and river water or seawater flow back to the sewage pipe, the trunk sewage pipe of the low zone, or to the agricultural waterway side of the irrigation canal, causing flooding damage.

Recently, various sewage backflow prevention devices have been developed in order to prevent inundation damage caused by sewage, river water, or seawater backflow, and as such sewage backflow prevention devices, Korean Patent Publication No. 10-2008-0078974 (Sewage Backflow Prevention Device). ).

However, such a conventional non-return apparatus opens and closes only by the water pressure of the sewage, so when the amount of sewage discharged through the sewage pipe is small, the switch is not opened, so that the sewage flows back into the sewage pipe. .

In addition, it is difficult to smoothly discharge the sewage because the switch interrupts the flow of sewage, and there is a problem that it is difficult to discharge the bulky or long foreign substances because the pipeline of the connecting pipe cannot be completely opened.

In addition, when foreign matters such as sand, debris and contaminants flow into the gap between the edge of the switch and the inner wall of the connection pipe while the switch is blocking the pipe, it acts as an obstacle to the operation of the switch, so that the switch is not opened. Problems may arise.

The technical problem to be achieved by one embodiment of the present invention, the body portion having a vertically cut inlet and an outlet cut obliquely at a predetermined angle, by the hinged opening and closing door portion, the structure is simple, light weight, sewage discharge It is to provide this easy non-powered backflow prevention device.

In addition, the present invention, by arranging the fastening member having a plurality of fastening holes on the rim of the inlet of the body portion, by fastening the housing in the rear, by fastening the foreign matter blocking net in the front, it is possible to block the inflow of various foreign matters It is intended to provide a non-powered backflow prevention device.

In addition, the present invention, by arranging at least one of the side blocking film and the length adjusting member on the side of the opening and closing door portion, facilitates the opening and closing operation of the opening and closing door portion, and at the same time the failure caused by the inflow of foreign matter between the opening and closing door portion and the body portion To provide a non-powered backflow prevention device that can block the cause of.

An apparatus for preventing non-powered backflow according to an embodiment of the present invention includes a body part having a through hole in which an inlet for inflow of sewage is disposed in the front and a discharge port for discharging the sewage in the rear, and a rotatable portion at one side of the outlet of the body part. And an opening / closing door part hinged to open and close the outlet of the body part, the inlet of the body part being cut in a direction perpendicular to the central axis of the body part from the inlet to the outlet, and the outlet of the body part is formed on the central axis of the body part. For example, the cutting member may be diagonally cut at a predetermined angle, and a fastening member having a plurality of fastening holes may be disposed at the edge of the inlet of the body portion.

Here, the outlet of the body portion may be cut at an angle of about 20 degrees to 80 degrees with respect to the central axis of the body portion.

And, the outer side of the body portion, when the opening and closing door portion closing the outlet of the body portion, may be formed a seating groove in which one side of the opening and closing door portion is seated.

In addition, the present invention may further include a housing surrounding the body part and the opening / closing door part, and the housing may have a through hole into which the body part and the opening / closing door part are inserted.

Here, a fastening member having a plurality of fastening holes is disposed at the edge of one end of the housing, and the fastening member of the housing may be fastened with the fastening member disposed at the edge of the inlet of the body part.

In addition, the present invention may be disposed to cover the inlet of the body portion, it may further include a foreign matter blocking network to block the inflow of foreign matter.

Here, a fastening member having a plurality of fastening holes is disposed at the edge of one end of the foreign material blocking net, and the fastening member of the foreign material blocking net may be fastened with the fastening member disposed at the edge of the inlet of the body part.

Then, the opening and closing door part is disposed above the buoyancy member that generates buoyancy and the buoyancy member by sewage flowing backward in the discharge port direction of the body part, and closes the outlet of the body part by buoyancy of the buoyancy member, and sewage flows backward. When is removed, the outlet of the body portion itself by using the load of the opening and closing door portion may include a guide portion for guiding the sewage flowing from the inlet of the body portion to the outlet of the body portion.

Here, the guide portion may include a guide plate which is in contact with the upper portion of the buoyancy member and induces the discharge of sewage, and a side blocking film which protrudes in the opposite direction of the buoyancy member from the side of the guide plate and induces the discharge of sewage. .

In some cases, the opening / closing door part is formed of a buoyancy body that generates buoyancy by sewage flowing backward in the direction of the outlet of the body part, and the buoyancy body protrudes from the side surface of the buoyancy body toward the body part to induce discharge of sewage. Side barriers;

As another case, the opening and closing door part is connected to one side of the buoyancy member that generates buoyancy and the side of the buoyancy member by the sewage flowing backward in the discharge port direction of the body portion, and the other side of the side of the body portion is connected to the buoyancy member. The length may be reduced when closing the outlet of the part, and may include a length adjusting member that is lengthened when the buoyancy member opens the outlet of the body part.

As another case, the opening / closing door part is disposed above the buoyancy member in which buoyancy is generated by the sewage flowing backward in the discharge port direction of the body part and the buoyancy member, and closes the outlet of the body part by buoyancy of the buoyancy member, When the reversed sewage is removed, the outlet of the body part is opened by itself using the load of the opening and closing door part, and a guide part for guiding the sewage flowing from the inlet of the body part to the outlet part of the body part is connected to one side of the guide part, The other side is connected to the side of the body portion, when the guide portion closes the outlet of the body portion, the length is reduced, when the guide portion opens the outlet of the body portion may include a length adjusting member that is extended.

Here, the guide portion includes a guide plate which is in contact with the upper portion of the buoyancy member and induces the discharge of sewage, and a side blocking film which protrudes in the opposite direction of the buoyancy member from the side of the guide plate and induces the discharge of sewage. The adjusting member may cover the side blocking film of the guide part to block penetration of external foreign matter.

According to one embodiment of the present invention, the body portion having a vertically cut inlet and an outlet cut obliquely at a predetermined angle, by the hinge opening and closing the door portion, the structure is simple, light weight, easy to discharge the sewage There is.

In addition, the present invention, by arranging the fastening member having a plurality of fastening holes on the rim of the inlet of the body portion, by fastening the housing in the rear, by fastening the foreign matter blocking net in the front, it is possible to block the inflow of various foreign matters It works.

In addition, the present invention, by arranging at least one of the side blocking film and the length adjusting member on the side of the opening and closing door portion, facilitates the opening and closing operation of the opening and closing door portion, and at the same time the failure caused by the inflow of foreign matter between the opening and closing door portion and the body portion It is effective to block the cause.

1A to 1F show a non-powered backflow prevention device according to the present invention;

2 is an exploded view of a non-powered backflow prevention device according to the present invention

3 and 4 are views showing other embodiments of the opening and closing door portion of FIG.

5a to 5c are views showing the lower surface position of the opening and closing door portion of FIG.

Hereinafter, with reference to the drawings will be described the present invention in more detail.

The suffixes "module" and "unit" for components used in the following description are merely given in consideration of ease of preparation of the present specification, and the "module" and "unit" may be used interchangeably with each other.

Furthermore, although an embodiment of the present invention will be described in detail with reference to the accompanying drawings and the contents described in the accompanying drawings, the present invention is not limited or restricted by the embodiments.

The terminology used herein is a general term that has been widely used as far as possible in consideration of functions in the present invention, but may vary according to the intention or custom of a person skilled in the art or the emergence of a new technology. In addition, in certain cases, there is a term arbitrarily selected by the applicant, and in this case, the meaning will be described in the corresponding description of the invention. Therefore, it is to be understood that the terminology used herein is to be interpreted based on the actual meaning of the term and the contents throughout the specification, rather than simply on the name of the term.

Figure 1a to 1f is a view showing a non-powered backflow prevention apparatus according to the present invention, Figure 1a is a perspective view, Figure 1b is a side view, Figure 1c is a front view, Figure 1d is a rear view, Figure 1e is a top view 1F is a bottom view.

As shown in FIGS. 1A to 1F, the non-powered backflow prevention apparatus of the present invention may be largely divided into a body part 10 and an opening / closing door part 20.

Here, the body portion 10 may have a through hole in which the inlet 12 through which the sewage is introduced is disposed in the front, and the outlet 14 through which the sewage is discharged.

At this time, the inlet 12 of the body portion 10 is cut in a direction perpendicular to the central axis of the body portion 10 from the inlet 12 toward the outlet 14, the outlet of the body portion 10 14 may be cut at an angle with respect to the central axis of the body portion 10 at a predetermined angle.

For example, the outlet 14 of the body portion 10 may have a cutting angle θ1 that is obliquely cut at about 20 degrees to 80 degrees with respect to the central axis of the body portion 10.

The reason is that the opening / closing door part 20 facilitates opening and closing of the outlet 14 of the body part 10.

The buffer member 16 may be disposed at the edge of the outlet 14 of the body portion 10.

The reason for this is that when the opening / closing door part 20 closes the outlet 14 of the body part 10, the sewage that flows backward while relieving the impact between the opening and closing door part 20 and the body part 10 is relieved. It is to seal to block inflow.

Subsequently, when the opening / closing door part 20 closes the outlet of the body part 10, a seating groove 18 in which one side of the opening / closing door part 10 is seated may be formed on the outer side of the body part 10. It may be.

Here, when the opening / closing door portion 20 closes the outlet of the body portion 10 in the seating groove 18 of the body portion 10, the side blocking film and the length adjustment of the guide portions of the opening / closing door portion 10 are adjusted. The member may be seated.

This will be described later.

Next, a fastening member 30 having a plurality of fastening holes 32 may be disposed at an edge of the inlet 12 of the body part 10.

Here, the reason for forming the fastening member 30 in the body portion 10, the housing that surrounds the outside and foreign matter blocking network to block the inflow of foreign matters, as well as fastening to the installation structure, such as sewage pipes. To do this.

For example, the housing may surround the body part 10 and the opening / closing door part 20, and the housing may have a through hole into which the body part 10 and the opening / closing door part 20 are inserted.

Here, the diameter of the through hole of the housing may be larger than the diameter of the through hole of the body portion.

In addition, a fastening member having a plurality of fastening holes may be disposed at an edge of one end of the housing, and the fastening member of the housing is fastened to the edge of the inlet 12 of the body part 10. It can be fastened with.

In addition, the foreign matter blocking network is disposed to cover the inlet 12 of the body portion 10, it can block the inflow of foreign matter.

Here, a fastening member having a plurality of fastening holes may be disposed at the edge of one end of the foreign matter blocking net, and the fastening member of the foreign matter blocking net is fastened to the edge of the inlet 12 of the body part 10. Can be engaged with the member.

On the other hand, the opening and closing door portion 20 is hinged to be rotatable to one side of the outlet 14 of the body portion 10, it is possible to open and close the outlet 14 of the body portion 10.

Here, the opening and closing door unit 20 may be manufactured in various structures.

For example, the opening / closing door part 20 is disposed above the buoyancy member that generates buoyancy and the buoyancy member by the sewage flowing backward in the direction of the outlet 14 of the body part 10, and is applied to the buoyancy force of the buoyancy member. When the outlet 14 of the body portion 10 is closed, and the sewage flowing back is removed, the outlet 14 of the body portion 10 is opened by itself using the load of the opening / closing door portion 20, It may include a guide for guiding the sewage flowing from the inlet 12 of the body portion 10 to the outlet 14 of the body portion 10.

Here, the buoyancy member may be made of only a buoyancy body that generates buoyancy, or a rubber tube 28 for maintaining buoyancy may be disposed inside the buoyancy member.

When the tube 28 is disposed inside the buoyancy member, the buoyancy can be continuously maintained even if the outer surface of the buoyancy member is broken, thereby eliminating the risk of loss of buoyancy function of the opening / closing door part 20 due to the breakage of the buoyancy member. have.

The guide part may include a guide plate which is in contact with the upper portion of the buoyancy member and induces the discharge of sewage, and a side blocking film that protrudes in the opposite direction of the buoyancy member from the side of the guide plate and induces the discharge of sewage. .

In this case, the side blocking film may be seated in the mounting groove 18 formed on the outer side of the body portion 10 when the guide portion closes the outlet 14 of the body portion 10.

In some cases, the side blocking film and the guide plate may be made of the same material as the buoyancy member, and in other cases, the side blocking film and the guide plate may be made of a material different from the buoyancy member.

In another example, the entire opening / closing door part 20 may be formed only of a buoyancy body in which buoyancy is generated by sewage flowing backward in the direction of the outlet 14 of the body part 10, and the buoyancy body is a side of the buoyancy body. Protruding from the body 10 in the direction, it may include a side blocking film to induce the discharge of sewage.

As another example, the opening and closing door part 20 is connected to one side of the buoyancy member for generating buoyancy and the side surface of the buoyancy member by sewage flowing backward in the direction of the outlet 14 of the body part 10, and the body The other side is connected to the side of the part 10, so that when the buoyancy member closes the outlet 14 of the body portion 10, the length is reduced, and the buoyancy member can open the outlet 14 of the body portion 10. At this time, the length adjustment member may include a length adjusting member.

Here, the length adjusting member may be at least one of an elastic body and a corrugated body.

As another example, the opening / closing door part 20 is disposed above the buoyancy member and buoyancy member in which buoyancy is generated by the sewage flowing backward in the direction of the outlet 14 of the body part 10, When the outlet 14 of the body portion 10 is closed by buoyancy and the sewage flowing back is removed, the outlet 14 of the body portion 10 is opened by itself using the load of the opening / closing door portion 20. Thus, the guide portion for guiding the sewage flowing from the inlet 12 of the body portion 10 to the outlet 14 of the body portion 10, one side is connected to the side of the guide portion, the side of the body portion 10 The other side is connected, the length is reduced when the guide portion closes the outlet 14 of the body portion 10, the length adjusting member that is lengthened when the guide portion opens the outlet 14 of the body portion 10 It may also include.

In addition, the lower surface of the opening / closing door portion 20 is on a line different from the extension line passing through the outer surface of the body portion 10 when the opening / closing door portion 20 opens the outlet 14 of the body portion 10. Can be located.

In some cases, the lower surface of the opening / closing door portion 20 is the same as the extension line passing through the outer surface of the body portion 10 when the opening / closing door portion 20 opens the outlet 14 of the body portion 10. It may be located on board.

Therefore, the present invention, the opening and closing door portion 20 is hinged to the body portion 10 having the inlet 12 vertically cut and the outlet 14 cut obliquely at a predetermined angle, the structure is simple, Light weight and easy sewage discharge

2 is an exploded view of a non-powered backflow prevention apparatus according to the present invention.

As shown in FIG. 2, the present invention may include a body portion 10, an opening / closing door portion 20, a housing 40, and a foreign matter blocking net 50.

Here, the housing 40 and the foreign matter blocking net 50 may be omitted in some cases.

Subsequently, in the body part 10, the buffer member 16 may be disposed at an edge of the outlet 14.

And, the outer side of the body portion 10, when the opening and closing door portion 20 closes the outlet of the body portion 10, a seating groove 18 to which one side of the opening and closing door portion 10 is seated is formed. It may be.

Here, when the opening / closing door part 20 closes the discharge port of the body part 10 in the seating groove 18 of the body part 10, the side blocking film | membrane of the guide part 24 of the opening / closing door part 10 is carried out. 24a may be seated.

The housing 40 may surround the body part 10 and the opening / closing door part 20, and the housing 40 may include a through hole through which the body part 10 and the opening / closing door part 20 are inserted. 42) can be formed.

Here, the diameter D1 of the through hole 42 of the housing 40 may be larger than the diameter of the through hole of the body part 10.

In addition, a fastening member 44 having a plurality of fastening holes 46 may be disposed at an edge of one end of the housing 40, and the fastening member 44 of the housing may include an inlet hole of the body part 10. 12 may be fastened to the fastening member 30 disposed at the edge.

In addition, the foreign matter blocking network 50 is disposed to cover the inlet 12 of the body portion 10, it can block the inflow of foreign matter.

Here, a fastening member 52 having a plurality of fastening holes 54 may be disposed at an edge of one end of the foreign material blocking net 50, and the fastening member 52 of the foreign material blocking net 50 may be a body. It may be fastened with the fastening member 30 disposed on the edge of the inlet 12 of the portion 10.

On the other hand, the opening / closing door part 20 is arrange | positioned above the buoyancy member 22 and buoyancy member 22 which buoyancy generate | occur | produces by the sewage which flows back toward the discharge port 14 direction of the body part 10, When the discharge port 14 of the body part 10 is closed by the buoyancy force of the buoyancy member 22 and the sewage flowing back is removed, the discharge port 14 of the body part 10 is opened and the load of the door part 20 opens. By using itself to open, it may include a guide portion 24 for guiding the sewage flowing from the inlet 12 of the body portion 10 to the outlet 14 of the body portion 10.

Here, the buoyancy member 22 may be made of only a buoyancy body that generates buoyancy, or a rubber tube 28 for maintaining buoyancy may be disposed in the buoyancy member 22.

When the tube 28 is disposed inside the buoyancy member 22, the buoyancy can be continuously maintained even when the outer surface of the buoyancy member 22 is broken, and the opening / closing door part 20 due to the breakage of the buoyancy member 22 is lost. The risk of loss of buoyancy can be eliminated.

And the guide part 24 is in contact with the upper part of the buoyancy member 22, and guides the guide plate 24a which guides discharge of sewage, and the side surface of the guide plate 24a to the opposite direction of the buoyancy member 22. Protruding, it may include a side blocking film (24b) to induce the discharge of sewage.

At this time, the side blocking film 24b may be seated in the seating groove 18 formed on the outer side of the body portion 10 when the guide portion 24 closes the outlet 14 of the body portion 10. have.

The side blocking film 24b of the guide part 24 and the guide plate 24a may be manufactured in one piece. In this case, the side blocking film 24b of the guide part 24 and the guide plate 24a are the same. It can be made of material.

For example, both the side blocking layer 24b and the guide plate 24a of the guide part 24 may be made of a metal material.

In another case, the side blocking film 24b and the guide plate 24a of the guide part 24 may be separated from each other. In this case, the side blocking film 24b and the guide plate 24a of the guide part 24 may be separated from each other. It can be made of different materials.

For example, the side blocking layer 24b of the guide part 24 may be made of the same material as the buoyancy member 22, and the guide plate 24a of the guide part 24 may be made of a metal material.

In addition, both the side blocking film 24b and the guide plate 24a of the guide part 24 may be made of the same material as that of the buoyancy member 22.

In another case, the side blocking film 24b and the guide plate 24a of the guide part 24 may be made of a material different from that of the buoyancy member 22.

Therefore, the present invention, by arranging the fastening member 30 having a plurality of fastening holes 32 on the edge of the inlet 12 of the body portion 10, to fasten the housing 40 to the rear, and to the front By fastening the foreign matter blocking network 50, it is possible to block the inflow of various foreign matter.

3 and 4 are views showing other embodiments of the opening and closing door part of FIG.

As shown in Figures 3 and 4, the opening and closing door portion 20 is hinged to be rotatable to one side of the outlet of the body portion, it may serve to open and close the outlet of the body portion.

As shown in FIG. 3, the opening / closing door part 20 may be manufactured in one piece with a buoyancy member and a guide part.

Therefore, the entire opening / closing door part 20 may be made of only a buoyancy body in which buoyancy is generated by the sewage flowing backward in the direction of the outlet of the body part.

Here, the buoyancy body may include a side blocking film 20a which protrudes from the side surface of the buoyancy body toward the body portion 10 and induces the discharge of sewage.

In addition, the opening / closing door part 20 can also use a length adjustment member instead of the side shielding film of the guide part 24. As shown in FIG.

Here, the length adjusting member is at least one of an elastic body and a corrugated body, the length of which is reduced when the guide portion 24 closes the outlet of the body portion, and when the guide portion 24 opens the outlet of the body portion. It may be, but is not limited to such.

In addition, as shown in FIG. 4, the opening / closing door part 20 may use both the side blocking film 24b and the length adjusting member 26 of the guide part 24.

That is, the opening / closing door part 20 is arrange | positioned above the buoyancy member 22 and buoyancy member 22 by which the buoyancy generate | occur | produces by the sewage which flows back to the discharge port direction of a body part, and the buoyancy force of the buoyancy member 22 is carried out. By closing the outlet of the body portion, and when the backwater is removed, the outlet of the body portion is opened by itself using the load of the opening and closing door portion 20 to guide the sewage flowing from the inlet of the body portion to the outlet of the body portion. When the guide part 24 and one side 26a are connected to the side surface of the guide part 24, and the other side 26b is connected to the side surface of the body part, when the guide part 24 closes the discharge port of a body part, The length may be shortened and may include a length adjusting member 26 that extends in length when the guide portion 24 opens the outlet of the body portion.

Here, the guide part 24 is in contact with the upper part of the buoyancy member 22, and guides 24a which guide | induces discharge of sewage, and in the opposite direction of the buoyancy member 22 from the side surface of the guide plate 24a. Protruding to include a side shielding film (24b) to induce the discharge of sewage, the length adjusting member 26 can cover the side shielding film (24b) of the guide portion 24, can block the penetration of foreign matter.

The length adjusting member 26 may be at least one of an elastic body and a corrugated body, but is not limited thereto.

As described above, the present invention facilitates the opening and closing operation of the opening and closing door part 20 by disposing at least one of the side blocking film 24b and the length adjusting member 26 on the side of the opening and closing door part 20. At the same time, the cause of the failure due to the inflow of foreign matter between the opening and closing door 20 and the body 10 may be blocked.

5A to 5C are views illustrating a lower surface position of the opening and closing door part of FIG. 1, and are side views thereof.

As shown in FIGS. 5A to 5C, the body part 10 may have a through hole in which an inlet for inflow of sewage is disposed in front and an outlet for discharging sewage in the rear. ), The inlet is cut in a direction perpendicular to the central axis of the body portion 10 from the inlet to the outlet, and the outlet of the body portion 10 has a predetermined angle with respect to the central axis of the body portion 10. Can be cut at an angle.

In addition, the opening / closing door part 20 may be hinged to one side of the outlet of the body 10 so as to be rotatable, and may open and close the outlet of the body 10.

Here, as shown in FIG. 5A, the lower surface 20a of the opening / closing door part 20 is the outer surface 10a of the body part 10 when the opening / closing door part 20 opens the outlet of the body part 10. It may be located on the same line as the extension line passing through).

That is, the second extension line passing through the lower surface 20a of the opening / closing door part 20 may be positioned on the same line as the first extension line passing through the outer surface 10a of the body portion 10.

In some cases, as shown in FIGS. 5B and 5C, the lower surface 20a of the opening / closing door part 20 is the body part 10 when the opening / closing door part 20 opens the outlet of the body part 10. It may be located on a line different from the extension line passing through the outer surface (10a) of.

That is, the second extension line passing through the lower surface 20a of the opening / closing door part 20 may be positioned on a line different from the first extension line passing through the outer surface 10a of the body portion 10.

For example, as shown in FIG. 5B, the lower surface 20a of the opening / closing door part 20 is disposed inward of the body part 10 when the opening / closing door part 20 opens the outlet of the body part 10. Can be.

In this case, the second extension line passing through the lower surface 20a of the opening / closing door part 20 and the first extension line passing through the outer surface 10a of the body portion 10 can maintain a first distance d11 at a predetermined distance. .

In addition, as shown in FIG. 5C, the lower surface 20a of the opening / closing door part 20 is disposed outside the body part 10 when the opening / closing door part 20 opens the outlet of the body part 10. Can be.

In this case, the second extension line passing through the lower surface 20a of the opening / closing door part 20 and the first extension line passing through the outer surface 10a of the body part 10 can maintain a second distance d12 of a predetermined distance. .

Thus, the reason for varying the arrangement of the opening / closing door part 20 is to give flexibility of installation according to the installation place and environment of the present invention.

Therefore, the present invention is advantageous in that it can be installed in various places without limitation by modifying the arrangement of the opening / closing door part 20 and the body part 10 according to various installation places and environments.

While the above has been shown and described with respect to preferred embodiments of the present invention, the present invention is not limited to the specific embodiments described above, it is usually in the technical field to which the invention belongs without departing from the spirit of the invention claimed in the claims. Various modifications can be made by those skilled in the art, and these modifications should not be individually understood from the technical spirit or the prospect of the present invention.

10: body part

12: inlet

14: outlet

18: settling groove

20: opening and closing door part

22: buoyancy absence

24: guide part

26: length adjustment member

30: fastening part

40: housing

50: foreign object screen

Claims

A body part having a through hole in which an inlet for inflow of sewage is introduced in the front and an outlet for discharging the sewage in the rear; And, hinged to be rotatable to one side of the outlet portion of the body, including an opening and closing door portion for opening and closing the outlet of the body portion,

The inlet of the body portion is cut in a direction perpendicular to the central axis of the body portion from the inlet toward the outlet,

The outlet of the body portion is cut at an angle of 20 degrees to 80 degrees with respect to the central axis of the body portion,

At the edge of the inlet of the body portion, a fastening member having a plurality of fastening holes is disposed,

The non-powered backflow preventing device is formed on the outer side of the body part, when the opening and closing door portion closes the outlet of the body portion, a seating groove in which one side of the opening and closing door portion is seated.
The method of claim 1,

The non-powered backflow prevention device, characterized in that the buffer member is disposed on the edge of the discharge port of the body portion.
The method of claim 1,

Further comprising a housing surrounding the body portion and the opening and closing door portion,

The housing is a non-powered backflow prevention device characterized in that the through-hole is formed is inserted into the body portion and the opening and closing door portion.
The method of claim 3, wherein

At the edge of one end of the housing, a fastening member having a plurality of fastening holes is disposed,

The fastening member of the housing, the non-powered backflow prevention apparatus, characterized in that the fastening member is arranged on the edge of the inlet of the body portion.
The method of claim 1,

It is arranged to cover the inlet of the body portion, non-powered backflow prevention device further comprises a foreign matter blocking network to block the inflow of foreign matter.
The method of claim 1,

The opening and closing door unit,

A buoyancy member in which buoyancy is generated by sewage flowing backward in the direction of the outlet of the body portion;

Is disposed above the buoyancy member, by the buoyancy of the buoyancy member, the outlet of the body portion is closed, and if the reversed sewage is removed, the outlet of the body portion is opened by itself using the load of the opening and closing door portion And a guide part for guiding the sewage flowing from the inlet of the body part to the outlet of the body part.
The method of claim 1,

The opening and closing door part is made of a buoyancy body that generates buoyancy by sewage flowing backward in the direction of the outlet of the body part,

The buoyancy body, protruding toward the body portion from the side of the buoyancy body, non-powered backflow prevention device, characterized in that it comprises a side blocking film for inducing the discharge of the sewage.
The method of claim 1,

The opening and closing door unit,

A buoyancy member in which buoyancy is generated by sewage flowing backward in the direction of the outlet of the body portion;

Is disposed above the buoyancy member, by the buoyancy of the buoyancy member, the outlet of the body portion is closed, and if the reversed sewage is removed, the outlet of the body portion is opened by itself using the load of the opening and closing door portion A guide part for guiding sewage flowing from the inlet of the body part to an outlet of the body part;

One side is connected to the side of the guide portion, the other side is connected to the side of the body portion, the length is reduced when the guide portion closes the outlet of the body portion, the length is reduced when the guide portion opens the outlet of the body portion Non-powered backflow prevention device comprising an elongated length adjusting member.