KR100768157B1 - Manhole protection cap having a step for preventing flowing-backward - Google Patents

Abstract

The present invention relates to a safety management method of the manhole cover installation structure and the installation structure of the facility, more specifically, to install a backflow prevention cover between the manhole support frame and the manhole cover, and installed, such as dirt, sand, rainwater, etc. Various facilities installed in the manhole can be effectively blocked from contamination or failure by foreign substances, and also induces the flow of various odorous substances and toxic gases generated inside the manhole to only one side or is necessary. According to the present invention relates to a protective cover having a backflow prevention means provided in a structure capable of blocking the flow.

The backflow prevention cover installed on the manhole cover of the present application is installed on the upper part of the water, sewage facility, sewage and wastewater treatment plant facilities buried in the ground, as well as electric, telecommunication, water and gas facilities, and the casting cover frame and the casting cover part are installed. It can be applied to all the facilities that have a structure to be, and a solid body such as soil or sand, while being restrained by a backflow prevention cover that is formed between the manhole support frame and the manhole cover. The backflow prevention cover has a concave shape (convex shape) that can direct the flow of fluid such as tap water, sewage, and other liquids such as odors and toxic gases to one side, or block the flow if necessary. Or a protective cover cover portion in a shape having a horizontal plane.

Manholes, manhole frames, manhole covers, protective covers, backflow prevention means

Description

Manhole protection cap having a step for preventing flowing-backward}

1 is a view illustrating a conventional manhole structure

Figure 2 is an exploded perspective view showing the configuration of the present invention

Figure 3 is an overall cross-sectional view of the manhole constituting the present invention.

Figure 4 is an exploded view of the non-return valve in the present invention

5 is an operating state of the non-return valve in the present invention

* Description of the symbols for the main parts of the drawings *

10: manhole frame 12: seating portion

20: manhole cover 30: protective cover

31: step 32: cover

33: fastener 40: backflow prevention means

41: fastening tube 42; Support plate

43: valve membrane 44: exhaust hole

50: handle 60: elastic packing

The present invention relates to a manhole protective cover having a backflow prevention means, and more particularly, to a manhole protective cover that can prevent foreign substances flowing through the manhole cover to prevent the inflow into the manhole.

In general, the urban area is formed with a joint hole to install water and sewage pipes, communication pipes, gas pipes, etc. in the basement, such as roads, and a manhole connected to the joint hole is installed in the joint hole for access from the ground. It is buried at the same height as the surface, and the manhole cover is fitted to facilitate walking or driving.

The manhole cover is different in size and size depending on the type of facility, but the manhole cover is available in various structures and specifications ranging from 10 Kg to 300 Kg in weight, and is buried in the ground because it is made of cylindrical or rectangular cast iron. When installing or repairing existing electrical, telecommunication, water and gas facilities, remove the lid from the buried support frame, and the worker enters the manhole and performs the work. It is managed so that it does not interfere with traffic of cars and pedestrians by making it level.

However, in the conventional manhole structure, as shown in FIG. 1, the manhole support frame 2 is installed on the upper surface of the manhole 1 for accommodating various facilities, and the manhole cover 3 is placed on the support frame 2 above. As a result, such a general structure causes a lot of problems, the lid placed on the support frame is level with the ground, the heavy car or pedestrians pass through the lid, the conventional manhole structure is simply a lid on the support frame Because it is a raised structure, when the car passes over the lid, it can't absorb the shock and load properly. If this phenomenon persists, the manhole sinks, causing the rattling noise or deformation. If the cracks and damages proceed to increase, there is a problem that can cause a large accident due to the damaged parts of the vehicle driving. It was.

In addition, the rainwater and various foreign substances are introduced into the manhole through the manhole cover and the gap inserted in the manhole support frame, and when the flow of the manhole cover occurs due to the load of the driving vehicle, the gap becomes larger, thereby increasing the inflow of various foreign substances. Due to this, rainwater and various foreign matters introduced into the manhole are accumulated, and there has been a problem of causing significant obstacles when entering and exiting the manhole for checking and repairing. Not only is a huge budget wasted due to the need for construction, but sometimes there is a problem that a man falls out and causes a big accident because the manhole cover is not properly closed at a construction site and a septic tank cleaning site.

In order to improve the above problems, the manhole cover structure for preventing unauthorized opening as disclosed by the applicant of the applicant is disclosed, the Utility Model No. 382,483 relates to a manhole cover with a safety device for preventing unauthorized opening, the lid A receiving protrusion protruding toward the outside on one side of the frame of the main body; A locking groove formed deeper than a bottom surface of the single-layer portion formed on the inner bottom of the accommodation protrusion; A locking plate fixedly attached to a single-layered part of the accommodation protrusion, and having an insertion hole formed to be elongated toward the protrusion direction of the accommodation protrusion to expose the center of the locking groove; An insertion protrusion formed to protrude outwardly on one side of the opening and closing lid so as to be inserted into the receiving protrusion in a detachable manner; An exposed groove formed to a depth from the upper surface of the insertion protrusion to the middle of the thickness thereof; A through-hole formed to extend in the protruding direction of the insertion protrusion in a state penetrating the bottom surface of the insertion protrusion from the bottom of the exposed groove; After passing through the through-hole formed in the insertion protrusion and the insertion hole of the lock plate fixedly attached to the receiving protrusion in order to be accommodated in the locking groove and rotated within 90 ° in one direction to prevent the exit from the lock plate A safety bolt having a head which is formed to have a long length toward; Has developed a manhole cover with a safety device configured to include a safety nut screwed to the threaded portion of the safety bolt in a state immersed in the exposure groove of the insertion protrusion.

In addition, the lid body is fixed to the upper part of the manhole body buried in the ground by the applicant's prior application registration invention, and the lid to cover the lid body so as to open and close, located on one side of the base formed in the lid body And connecting protrusions protruding toward the center; One side of the lid and the engaging portion is formed to hang the hook formed on the end of the rod-shaped opening and closing tool; A bracket protruding downward from one side of the bottom of the lid as an opposite side of the locking portion; Hinge means for connecting the connection protrusion formed in the lid body and the bracket formed on one side of the bottom of the lid; The manhole cover structure that is configured to include has also been filed and registered.

However, even in the manhole structure, the solids such as soil or sand into the underground facilities through the manhole support frame or the manhole cover. The technical idea of controlling or blocking the flow of a fluid, such as tap water, sewage and other liquids, or gaseous substances such as odors and toxic gases, has not been disclosed.

The present invention has been made in view of the above-mentioned problems of the prior art, the present invention relates to a manhole installation structure for safe management and to prevent contamination inside the manhole, and more particularly between the manhole support frame and the manhole cover By installing and installing the backflow prevention cover, foreign substances such as soil, sand and rainwater flow into the manhole, effectively preventing various equipments installed in the manhole from being contaminated or broken by foreign substances, and also occurring inside the manhole. It is intended to provide a manhole cover installation structure of a structure that can induce the flow of various odorous substances, toxic gas, etc. to only one side or block the flow as necessary.

The present invention relates to a safety management method and a facility of the manhole cover installation structure, and more specifically, to install a backflow prevention cover between the manhole support frame and the manhole cover, and install foreign matter such as soil, sand, rainwater in the manhole Can effectively block various facilities installed in the manhole from being contaminated or broken by foreign substances, and also induce the flow of various odorous substances and toxic gases generated inside the manhole to one side only or Disclosed is a technical idea of using a backflow preventing cover in a manhole cover installation structure having a structure capable of blocking the flow thereof.

The backflow prevention cover installed on the manhole cover of the present application is installed on the upper part of the water, sewage facility, sewage and wastewater treatment plant facilities buried in the ground, as well as electric, telecommunication, water and gas facilities, and the casting cover frame and the casting cover part are installed. It can be applied to all the facilities that have a structure to be, and a solid body such as soil or sand, while being restrained by a backflow prevention cover that is formed between the manhole support frame and the manhole cover. The backflow prevention cover has a concave shape (convex shape) that can direct the flow of fluid such as tap water, sewage, and other liquids such as odors and toxic gases to one side, or block the flow if necessary. Or a protective cover cover portion in a shape having a horizontal plane.

The backflow prevention protection cover of the present application forms a structure in which the protection cover is covered on the cover frame edge between the casting cover frame and the manhole cover, and the manhole cover is seated thereon. The seating part is formed to insert and close the cushioning member to prevent the noise generated even when the vehicle passes over the lid, and to prevent the damage of the manhole and the lid by preventing the shock absorbing member from absorbing and offsetting the shock. Can be provided.

Naturally, the shock absorbing member may be applied to a structure in which not only the elastic packing material but also forming a seating groove in the manhole seating portion and installing an O-ring in the seating recess.

In addition, a protective cover having a backflow preventing function may be formed in a concave shape (convex shape) or in a shape having a horizontal surface in the center portion of the protective cover, and may include external soil, sand, etc. through the manhole. If the solids have a purpose to prevent the fall, the protective cover is applied in a concave shape that can hold a part of the fall, such as soil, sand can be built between the cover frame and the manhole cover, In areas where there is a possibility of backflow of sewage water in the summer and rainy season, a protective cover with a horizontal plane is installed between the cover frame and the casting part lid to prevent backflow, and it can be usefully managed to prevent backflow of the sewer by using a lid lock. Or one side of the present application to prevent the leakage of gas flow of odorous gas, toxic gas, etc. on the road It may be achieved by using a protective cover having a backflow preventing means for directing the flow.

In addition, the technical idea of the present application in the safety management method of the manhole installation structure installed on the upper part of the facility for the safety management of various underground facilities, it has a backflow prevention function to induce the flow of fluid to only one side between the manhole support frame and the manhole cover It is possible to control the flow of solids or fluid by embedding and installing a protective cover, the protective cover of the present application has a backflow prevention means for directing the flow of the fluid to one side, the protective cover cover portion has a concave shape to one side. It may be provided as a flat plate, or the reverse flow prevention means of the protective cover to form a valve membrane made of an elastic material such as rubber or silicone to surround the support plate formed integrally on the upper end of the fastening pipe fastened to the fastening hole, In the upper surface, exhaust holes are formed at appropriate intervals to prevent the backflow by means of inducing the flow of fluid to one side only. Was, the protective cover may be provided is selected from materials such as steel plate, or synthetic resin or FRP resin, synthetic rubber, recycled resin.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings, which also serve as a preferred embodiment in order to specifically support the technical spirit of the present invention.

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

Figure 2 is an exploded perspective view showing a technical configuration of an embodiment for implementing the technical idea of the present invention, Figure 3 is a full cross-sectional view of the manhole constituting an embodiment for implementing the technical idea of the present invention, Figure 4 is a reverse flow The degree of separation of the prevention means is shown.

Conventional manhole mounting structure has a structure in which the packing degree is inserted into the seating portion 12 formed in the upper end of the manhole support frame 10 and the manhole cover 20 is seated thereon, and the manhole support frame 10 has a flange (below). The manhole installation structure of the structure which formed the rib 14 at equal intervals while forming 13) can be seen most.

Technical idea of the present application is to control the flow of solids or fluids by installing a protective cover having a backflow prevention function to guide the flow of fluid to only one side between the manhole support frame and the manhole cover, the manhole support frame (10 It is shown that the protective cover 30 having a backflow prevention function is caught in the seating portion 12 of the) and the upper part of the seat hole 20 is seated.

The protective cover 30, the stepped portion 31 is formed on the periphery so as to be caught by the seating portion 12 and the inner cover surface 32 may be formed in a concave shape or a horizontal surface shape, the cover surface 32 As the backflow preventing means 40 is inserted into the central portion of the seat groove 34 to be fastened and the fastening hole 33 can be confirmed, there is confirmed an embodiment of the structure.

The cover surface 32 may be provided with a handle 50 on one side or both sides to facilitate the attachment and detachment of the protective cover 30, the elastic material packing 60 as a cushioning member to the bottom of the edge of the protective cover 30 Or O-rings of elastic materials such as rubber or silicone, and close contact with each other to suppress the noise generated even when the vehicle passes over the lid, and to prevent the shock absorber from absorbing and offsetting the shocks. It has been shown that a structure that can be prevented in advance can be provided.

The backflow prevention means 40 is formed of an elastic valve film 43 made of rubber or silicon to surround the support plate 42 formed integrally with the upper end of the fastening pipe 41 fastened to the fastening hole 33. The upper surface of the valve membrane 43 may be provided by forming the exhaust hole 44 at a predetermined interval so that the lower gas can be exhausted.

The support plate 42 is intended to provide a structure having a continuously curved shape (42a) to facilitate the discharge of the gas while facilitating the coupling with the valve membrane (43).

The manhole is representative of water supply, and the technical concept of the present application is not limited to water supply, and the casting cover is covered upwards in electric, telecommunication, water and gas facilities as well as in water and sewage facilities, sewage and wastewater treatment facilities. The same technical concept can be applied to all installations that have a structure in which a mold and a casting lid are installed.

Referring to the operation of the present invention configured in this way,

When the protective cover 30 having a backflow prevention function is first seated on the seating portion 12 formed at the top of the manhole frame 10, and then the manhole cover 20 is seated, the manhole is supported by the weight of the manhole cover 20. A state of blocking the entrance of the mold 10 or a manhole with a locking device may be covered.

Soil and sand, rainwater and other foreign matter introduced through the holes and gaps of the seated manhole cover 20 in this state is collected in the protective cover 30 installed at the inlet when the foreign matter to be introduced into the manhole frame 10 The manhole frame 10 will not flow directly into the facility. When the manhole cover 20 is withdrawn when entering and exiting the manhole for regular inspection or maintenance, the protective cover 30 is exposed to the outside and the handle 50 is pulled out to the outside to collect the dirt collected in the protective cover 30. Since various foreign matters such as sand can be collected separately, the sand or other foreign matters do not flow into the manhole so that the operator can easily perform inspection and repair.

And the center of the protective cover 30 is to be used to fasten the backflow prevention means 40 disclosed in Figs. 4 and 5, for example, the use of the backflow prevention means 40, the external rainwater and Soil, sand, etc. can be prevented from entering the inside of the facility, and if a small amount of gas generated from the underground facility is desired to be discharged to the outside, the structure as shown in FIG. 4 can be presented. The gas rising upward through the fastening pipe 41 of the non-return valve 40 pushes the valve membrane 43 wrapped around the support plate 42 formed on the top of the fastening plate 41 by pressure, thereby increasing the pressure of the rubber material. Since the gap is generated due to the elasticity, it is discharged upward through the exhaust hole 44 formed in the valve membrane 43. On the contrary, when the rainwater introduced through the manhole cover 20 flows in, the valve membrane 44 is prevented by the pressure. This support plate (4 2) is in close contact with the exhaust hole 44 is the water does not fall to the bottom.

Thus, for example, when the opposite effect is desired, i.e., in a region where the sewerage may be flowed back during the rainy season in the summer, the sewer cover frame and the casting part lid have a horizontal surface with a simple sealing function without a backflow prevention means. The protective cover is built in, and the lid lock can be fastened so that it can be usefully managed to prevent the backflow of the sewer. In another case, the rainwater from the upper part of the manhole is sent down while the harmful gas generated from the facility In order to prevent it from appearing, when the non-return means 40 disclosed in FIG. 5 is used by fastening the cover to the protective cover with the reversed position, the valve membrane 44 is supported by the pressure of the harmful gas rising from the bottom. As the exhaust hole 44 is blocked, the gas is prevented from coming out to the upper part. It is a technical idea that can provide a structure that can flow down.

As described above, the present invention can easily collect various foreign substances introduced into the manhole when inspecting or repairing the manhole, thereby preventing contamination in the manhole, and thus, the operator can conveniently enter and exit the manhole. The manhole internal management can be made extremely simple.

In addition, the manhole structure of the present application can prevent the introduction of solids such as soil, sand, and the like into the underground facilities, and flows only one side of the flow of backflow water during the summer rainy season, or takes a complete block structure. Because it can be conveniently managed for the purpose, the facility can be managed later without additional dredging work.

In addition, when applied to a manhole such as city gas may be provided in a structure that can control or block the flow of the fluid, such as gaseous odor, toxic gas, etc. as necessary.

By installing the simple manhole protection cover of the present company, it is possible to secure the following management of various underground facilities, and to the management system for disaster prevention in underground facilities in consideration of manpower and cost for repairing the underground facilities in the future. If you install the manhole protective cover of the present application and use the manhole locking device can be expected to further reduce the cost of safety management.

Claims (5)

In the manhole installation structure installed in various facilities, a protective cover having a backflow prevention function is built and installed between the manhole support frame and the manhole cover to prevent foreign substances from entering the manhole, while gas generated inside the manhole is discharged to the outside. In the safety management method of the manhole to be discharged, The protective cover 30 has a stepped portion 31 around the hooked portion 12 so as to be caught between the manhole support frame 10 and the manhole cover 20, and a backflow preventing means 40 in the central portion of the cover portion 32. ) Is provided to have a fastening hole 33 to make the seat groove 34 to be interpolated and fastened, The backflow preventing means 40 is configured to be fastened to the fastening hole 33, but the backflow preventing means 40 is provided integrally with the support plate 42 having the fastening pipe 41 having the continuous bent portion 42a. A circular valve membrane 43 of elastic material is formed to surround the support plate 42 at an upper portion thereof, and an exhaust hole 44 is formed on the upper surface of the valve membrane 43 at appropriate intervals. Preventing the inflow into the manhole and the gas generated in the manhole safety management method characterized in that it is provided to discharge to the outside. In the manhole installation structure installed in various facilities, a protective cover having a backflow prevention function is built and installed between the manhole support frame and the manhole cover to prevent foreign substances from entering the manhole, while gas generated inside the manhole is discharged to the outside. In the manhole mounting structure to be discharged, Between the manhole support frame 10 and the manhole cover 20, the protective cover 30 is built, installed has a backflow prevention means 40 to guide the flow of the fluid to only one side, The non-return means 40 is provided with a fastening tube 41 integrally with the support plate 42 having the continuous bent portion 42a, and the valve membrane 43 made of an elastic material is formed to surround the support plate 42 from above. The upper surface of the valve membrane 43 is provided with a structure for forming the exhaust hole 44 at appropriate intervals to form a structure that blocks the exhaust hole 44 to the support plate 42 to prevent foreign substances from entering the manhole. And, the manhole protective cover, characterized in that the gas generated in the bottom of the manhole is provided to be discharged to the outside through the exhaust hole 44 through the support plate (42). delete The method of claim 2, The protective cover 30 is a manhole protective cover, characterized in that provided by selected from a steel plate, synthetic resin, FRP resin, synthetic rubber, recycled resin material. The method of claim 2, Manhole protective cover, characterized in that to form a continuous curved shape (42a) around the support plate 42 of the reverse flow prevention means 40 of the protective cover 30 to guide the flow of the fluid smoothly.

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