KR100590413B1 - Construction type manhole for water supply - Google Patents

Abstract

The present invention relates to a prefabricated manhole for water supply, which prevents valve defects that may occur due to rusting of the valve by installing a backflow preventing means inside the manhole to separately discharge the water.

The prefabricated manhole for waterworks according to the present invention is combined with the manhole upper body 10 and the manhole upper body 10 in which a manhole cover 15 is exposed to the outside on the upper portion of the water pipe 16. The manhole lower body 30 forming a space surrounding the water, and the seating portion 25 and the seating portion 25 on which the water pipe 16 is seated and bent upwards to be bent upwards to the manhole lower body 30. Backflow prevention means 20 having a bent portion 24 fixed to the upper end of the) and including a backflow blocking film 40 for preventing backflow of the supply water, and communication with the bottom surface of the manhole lower body 30 And a drainage treatment pipe 52 for treating the drained supply water, and a drainage passage 62 for draining the supply water introduced through the drainage treatment pipe 52. 20) fixed to the manhole lower body 30 As a result, the water supply pipe 16 and the valve 17 have an effect that can be maintained so that no defects occur in the valve 17 or the pipe 16 when the water is full.

Manhole lower body, backstop membrane, backflow prevention gasket, manhole

Description

Prefabricated Manhole for Water Supply {CONSTRUCTION TYPE MANHOLE FOR WATER SUPPLY}

1 is a side view showing a conventional manhole facility for water supply;

2 is an exploded perspective view of a prefabricated manhole for waterworks according to an embodiment of the present invention;

Figure 3 is a side cross-sectional view showing a combined state of the prefabricated manhole for waterworks embodiment of the present invention,

4 is a side cross-sectional view showing a state of normal drainage treatment in a prefabricated manhole for waterworks according to an embodiment of the present invention;

Figure 5 is a side cross-sectional view showing the state of use of the water flow in the prefabricated manhole for backwater blocking state in the embodiment of the present invention.

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

10: manhole upper body 15: manhole cover

16: water supply pipe 17: valve

20: countercurrent prevention means 40: countercurrent blocking membrane

30: manhole lower body 52: drainage pipe

62: drainage path 82: rubber gasket

The present invention relates to a prefabricated manhole for water supply, and more particularly, to prevent water from being damaged due to rusting of the valve by installing a backflow prevention means inside the manhole to discharge water separately. A prefabricated manhole.

In general, a manhole is a general term for a facility that allows people to enter and exit for maintenance and repair of various pipelines installed underground. Such a manhole is a channel for supplying various sewage, living and industrial water, or a pipeline for various telecommunications. It will be installed at regular intervals in the middle.

Conventional manholes can be largely divided into two methods: forming formwork and constructing cement directly, and assembling and constructing each component standardized by KS. Depending on the place where the ready-made product is installed, the vertical sphere and the upper sphere are placed on the lower sphere.

However, since the manhole is divided into a lower sphere and a plurality of vertical spheres and an upper sphere, respectively, a connection part is generated, and this connection part has a problem of leakage due to ground subsidence or buoyancy due to water.

1 is a schematic view showing a conventional manhole facility for waterworks, wherein an upper portion of the manhole body 4 is covered with a manhole cover 2, and an upper surface of the manhole cover 2 is exposed, and the manhole body ( One side of the bottom of the 4) is provided with an inclined discharge hole and a drainage treatment facility 8 for discharging water in the manhole body 4 is installed. Reference numeral 6 denotes a water pipe and 7 denotes a valve. Referring to FIG. 1, it can be seen that the supply water is almost filled inside the water pipe 6 and the manhole body 4. .

In the conventional water supply manhole facility configured as described above, a problem occurs in water supply pipe 6 and the valve 7 due to water leakage, so that the valve may not be locked in an emergency, leading to an emergency.

The present invention is to solve the problems as described above, by installing a backflow blocking membrane inside each manhole to discharge the water separately to prefabricated prefabricated manhole to prevent the defect of the valve that may occur due to the rust of the valve caused by water The purpose is to provide.

In order to achieve the above object, the present invention is a manhole upper body of the rectangular shape in which the manhole cover exposed to the outside is seated, and the manhole lower body is combined with the manhole upper body to form a space surrounding the water pipes And a backflow preventing means having a seating portion on which the water pipe is seated and a bending portion extending from the seating portion and bent upward to be fixed to an upper end portion of the manhole lower body, and being connected to a bottom surface of the manhole lower body. There is provided a prefabricated manhole for water supply, comprising a drainage pipe for treating the drained supply water, and a drainage path for draining the supply water introduced through the drainage pipe.

Preferably, it characterized in that it further comprises a rubber gasket interposed between the manhole upper body and the manhole lower body.

Also preferably, at least one backflow blocking membrane is installed in the plurality of holes formed in the horizontal surface of the bent portion of the backflow preventing means.

Hereinafter, the prefabricated manhole for waterworks according to the present invention will be described in more detail with reference to the accompanying drawings.

Figure 2 is an exploded perspective view of a prefabricated manhole for waterworks according to an embodiment of the present invention, Figure 3 is a side cross-sectional view showing a combined state of the prefabricated manhole for waterworks according to an embodiment of the present invention, Figure 4 is a normal drainage treatment in a prefabricated manhole for waterworks according to an embodiment of the present invention. State of use side cross-sectional view showing the state, Figure 5 is a state of use side cross-sectional view showing the state of backflow blocking during full-water discharge in the prefabricated manhole for waterworks according to an embodiment of the present invention.

For reference, in describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description thereof is omitted.

In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator.

Therefore, the definition should be made based on the contents throughout the specification.

The prefabricated manhole 100 for waterworks according to the present invention is combined with the manhole upper body 10 and the manhole upper body 10 in which a manhole cover 15 is mounted on the upper part of which is exposed to the outside, for waterworks. The manhole lower body 30 forming a space surrounding the tube 16, a seating portion 25 on which the water pipe 16 is seated, and an extension from the seating portion 25 and bent upwards to allow the manhole to be seated. Backflow prevention means (20) having a bent portion (24) fixed to the upper end of the lower body (30) and comprising a backflow blocking film (40) for preventing backflow of feed water, and the lower body of the manhole (30) It includes a drainage treatment pipe 52 for processing the supply water drained in communication with the bottom portion, and a drainage passage 62 for draining the supply water introduced through the drainage treatment pipe 52.

The manhole cover 15 is coupled to an upper center of the rectangular body 14 of the manhole upper body 10, and a flange portion 12 having a plurality of screw installation holes 13 is formed around the flange portion. A semicircular guide portion 17 for installing the water supply pipe 16 is formed on the face of the flange portion facing 12.

The manhole lower body 30 has a plurality of screw installation holes 37 are formed in the upper flange portion 32 of the rectangular body and a semi-circular guide portion 35 for installing the water supply pipe 16 is formed. Discharge pipe 33 is exposed on one side of the bottom.

The backflow preventing means 20 is fixed to the inner wall of the inner space of the manhole lower body 30 through a plurality of holes 23 formed in the bent portion 24 thereof, and is fixed to the horizontal portion 21 by the backflow blocking membrane. A plurality of 40 are inserted and installed.

The backflow blocking membrane 40 is a hollow cylindrical shape having upper and lower end flange parts 43 and 44 formed thereon, and one or more buoyancy rods 42 are attached to the lower flange part 44, and one or more penetrating holes are provided at the bottom of the hollow tube barrel. The ball 45 is formed.

A rubber gasket 82 is interposed between the manhole upper body 10 and the manhole lower body 30 to fix the screw, and to the flange portions 12 and 32 of the manhole upper body 10 and the lower body 30. Correspondingly, a pair is interposed in the shape of 'c'.

Reference numeral 52 denotes a drainage pipe, one end of which is bent to communicate with the discharge pipe 33 and covers a portion where the bent portion (especially the hole hole 53) is formed through the netron (geotextile) protection net 72. ) Is wrapped and attached to the manhole lower body 30 is installed. One or more hole holes 53 are formed in the bent portion. The other end of the drainage pipe 55 is connected to the bottom of the drainage passage 62.

Reference numeral 55 is inserted into the drainage pipe 55, and the upper end thereof is exposed to the drainage passage 62 so that the drainage is possible. The upper end of the rotary motor 54 has a built-in rotational force of the rotating motor 54. Through the change in the pressure difference through the manhole is configured to discharge the water in the lower body (30).

Referring to the state of use of the prefabricated manhole structure for waterworks according to the present invention configured as described above are as follows.

First, the ground 92 is excavated with an appropriate depth to construct the foundation concrete, and then fix the upper and lower manhole bodies 10 and 30 provided with the backflow prevention means 20.

Next, the wastewater treatment pipe 52 is connected through the discharge pipe 33 of the lower body 30 to be coupled and connects the end of the wastewater treatment pipe 52 with the drainage passage 62. In addition, the netron protection net 72 covers the hole holes 53 formed in the bent portion of the drainage pipe (52).

Referring to FIG. 4, the water in the lower body 30 is usually filled to some extent, and the water of the lower body 30 is normally drained through the drainage path 62. At this time, the reverse flow blocking membrane 40 blocks the hole by the upper flange portion 43 contacting the flat portion 21 of the backflow preventing means 20 by its own weight.

Referring to FIG. 5, when the water is sufficiently filled in the lower body 30, that is, when the water is full, the countercurrent blocking membrane 40 floats upward due to the buoyancy rod 42 touching the water, and the lower flange ( 44 closes the hole while contacting the bottom of the planar portion of the non-return means 20. Therefore, the water in the manhole lower body 30 does not flow toward the manhole upper body 10, so that it does not affect the water supply pipe 16.

Thus, the prefabricated manhole 100 according to the present invention is formed by fixing the backflow preventing means 20 to the lower body 30 and installing a backflow preventing film 40 on the backflow preventing means 20. Since the manhole lower body 30 is made of a structure that does not affect the water supply pipe 16 due to water, it is possible to effectively maintain the water supply pipe 16.

As such, according to the prefabricated manhole for waterworks according to the present invention, the manhole lower body 30 and the water supply pipe 16 are fixed to each other by fixing the backflow preventing means 20 to the manhole lower body 30. Separation has the effect of maintaining the water supply pipe 16 and the valve 17 so as to prevent the occurrence of high water level defects.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by those skilled in the art without departing from the gist of the present invention as claimed in the claims. Of course, such changes will fall within the scope of the claims.

Claims (3)

In the prefabricated manhole for water supply, A manhole upper body 10 having a rectangular shape in which a manhole cover 15 exposed to the outside is seated; A lower manhole body 30 coupled to the upper manhole body 10 to form a space surrounding the water pipe 16; The water supply pipe 16 is provided with a seating portion 25 and a bending portion 24 extending from the seating portion 25 to be bent upward and fixed to an upper end of the manhole lower body 30. A backflow prevention means (20) comprising a backflow blocking film (40) for preventing backflow of water; A drain treatment pipe 52 communicating with the bottom surface of the manhole lower body 30 for treating the drained supply water; Prefabricated manhole for water supply, characterized in that it comprises a drainage passage 62 for draining the supply water introduced through the drainage treatment pipe (52). The prefabricated manhole of claim 1, further comprising a rubber gasket (82) interposed between the manhole upper body (10) and the manhole lower body (30). 2. The prefabricated manhole for water supply according to claim 1, wherein the plurality of holes formed in the horizontal surface 21 of the bent portion 24 of the backflow preventing means 20 are provided with at least one backflow blocking film.

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