KR101737405B1 - The valve is equipped with an exhaust valve practical manhole cover adjust height and sewerage equipment - Google Patents

Abstract

The present invention relates to a device for adjusting the height of a manhole cover for a valve chamber in which an exhaust valve is mounted and a drainage system and, more specifically, relates to a device for adjusting the height of a manhole cover for a valve chamber in which an exhaust valve is mounted and a drainage system, wherein the device comprises the drainage system to collect moisture generated therein in one place to be discharged to the outside. According to the present invention, in the device for adjusting the height of a manhole cover for a valve chamber and the drainage system, the device comprises an exhaust valve device, a height adjusting device, a body reinforcing device, and the drainage system.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a height adjustment and drainage device for a manhole cover for a valve room equipped with an exhaust valve,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a height adjustment and drainage apparatus for a manhole cover for a valve room equipped with an exhaust valve, and more particularly to a control apparatus for controlling and maintaining a valve installed to control underground sewage, sewage, It is installed on the upper part of the manhole for the valve room to be installed and moves safely according to the gas pressure generated in the manhole so that it can be discharged to the outside and stably embedded in the ground through the rigidity reinforcement of the body, The present invention relates to a height adjustment and drainage device for a manhole cover for a valve room, which is equipped with an exhaust valve including a drain device capable of collecting moisture generated therein from the inside and discharging it to the outside.

Manholes are divided into waterworks, sewage, stormwater, sewage, and telecommunication, depending on the purpose. They are installed at regular intervals on the road or on the road, or installed on the farm roads. To control or maintain the valves installed in the engine.

The manhole is designed to be installed at a position where a valve is to be installed in a portion through which a pipeline buried in the underground passes. In order to protect the valve, a cylindrical main pipe is cut to a predetermined size, After rounding or tilting conically to the upper side, the tube is welded to the upper side by welding a pipe with a small diameter in the vertical direction. Cover the top of the manhole cover to protect the inside.

The manhole cover is opened only when the valve is controlled or enters the inside of the manhole for maintenance, and enters through a ladder installed therein to perform a desired operation. After completion of the operation, the manhole cover Thereby protecting the inside.

However, since a valve for controlling the pipeline is installed, gas is generated inside the manhole, and in the summer when the temperature rises, the amount of gas generated becomes large. Therefore, in order to discharge the gas to the outside, Since the outlet port is formed to protrude in the shape of "? &Quot;, the gas outlet protrudes to the outside, which makes it difficult for a vehicle or an agricultural machine to pass through in the case of a farm road.

In order to prevent such drawbacks, the gas discharge port is obstructed by the installation of the gas discharge port, so that the gas discharge valve is not provided so as to protrude above the manhole cover.

However, when the gas discharge valve is installed to prevent the inflow of water or foreign matter generated from the outside while discharging the gas generated in the manhole to the outside, a very complicated structure such as a spring is provided, The reliability of the gas discharging function is deteriorated, and it is very difficult to apply to the manhole cover due to an increase in manufacturing cost.

On the other hand, since the manhole is purchased by purchasing the body coated with a steel pipe, it is cut to a required size and then used by welding, and the steel pipe is installed so as to be erected. The circular shape is not maintained due to the pressure, and it is deformed to the inner diameter, so that it has been difficult to maintain the rigidity which does not continuously provide the buried state.

In addition, when the valve seat is manufactured in accordance with the design buried in the ground, the height of the manhole cover does not coincide with the ground when installing the valve in the field. In this case, the height of the manhole cover It was very difficult to control,

Literature 1. Patent Registration No. 0856028 (registered on Aug. 27, 2008) Document 2. Patent Registration No. 0762735 (registered on September 21, 2007) Literature 3. Patent No. 1188706 (registered on September 28, 2012) Document 4. Utility Model Registration No. 0253356 (Registered on October 26, 2001)

Accordingly, it is an object of the present invention to solve the above-mentioned drawbacks of the conventional art, and it is an object of the present invention to solve the problems of the present invention by providing a large number of manholes which are raised by the generated pressure of gas, Thereby preventing the foreign matter from penetrating into the manhole.

Another object of the present invention is to greatly improve rigidity so as to prevent the body from being deformed to an external pressure by welding a "C" type reinforcing bar to the outside diameter of a circular body at regular intervals.

Another object of the present invention is to adjust the height of the manhole cover so that the height of the manhole cover can be easily and accurately adjusted even if the height of the manhole cover does not match after performing the terra cotta to be buried in the ground.

A further object of the present invention is to provide a method and a device for collecting water and water generated in the interior of a valve chamber even after a turbine is installed to be buried in the ground, .

The present invention is characterized in that an arcuate connector is connected to an upper side of a body connecting a duct to a flange of a valve tube connected to a valve installed in the inside, a passage pipe is connected to a height control passage pipe at an upper side of the arcuate connector, A height adjustment and drainage device for a manhole cover for a valve room in which an exhaust valve is mounted on a manhole fixing table formed on the upper side of a pipe,
A control shaft provided at a predetermined interval in the circumferential direction of the manhole cover and formed with a screw shaft on an upper side of a control space formed on the upper side of the exhaust port, and a buoyancy control shaft protruding downward from the buoyancy control head located in the control space An exhaust valve device installed so as to penetrate the exhaust port and coupling an exhaust lid having a discharge space to a coupling shaft engaged with the screw shaft;
The height adjusting passage tube is formed with an outer diameter hole at regular intervals. An inner diameter hole is formed at a predetermined interval in the passage tube. A height adjusting hole is provided on the passage tube and fixed to the outer diameter hole by a fixing bolt and a nut A height adjustment device;
Wherein a shape reinforcing portion is provided at an outer diameter of the outer diameter of the body and an epoxy coating layer, an adhesive resin layer and a polyethylene coating layer are formed on an outer diameter of the metal layer of the body, and the inner diameter of the metal layer is formed of a polyurea and an epoxy resin coating layer;
The epoxy resin coating layer comprises 25 to 65% by weight of an epoxy resin, 5 to 15% by weight of a ceramic mixture to be ground to a size of 200 to 600 mash, a powder having a purity of 95 to 99% and a moisture content of 0.03 to 0.5 10 to 45% by weight of a jade powder composed of 10 to 50% by weight, and 20 to 50% by weight of a ceramic-based filler;
And a drain device for installing a motor pump on the bottom of the bottom of the body and a bottom inclined finishing portion facing the horizontal collecting floor in the center, and a grating on the grating fixed to the bottom inclined finishing portion .

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In the present invention, a plurality of manholes are provided, and the gas is raised by the generated pressure of the gas, and the gas is discharged to the outside, so that the gas generated inside the manhole is easily discharged to the outside, The gas generated from the inside can be easily discharged to the outside, and moisture and foreign matter such as rainwater generated from the outside can be prevented from penetrating into the inside of the manhole.

The present invention relates to a structure in which a "C" -shaped reinforcing bar is welded to an outer diameter of a circular body at regular intervals to integrate with the body so that rigidity is greatly improved even when external pressure acts on the body, Effect.

The height of the manhole cover can be easily and precisely adjusted by adjusting the height of the height adjusting passage pipe and the height of the manhole pipe through the height adjusting device of the height adjusting device even if the height of the manhole cover does not coincide after performing the terra- So that it is possible to stably perform the operation.

In the present invention, the bottom of the valve chamber is obliquely finished even when the valve chamber is inclined to one side without vertically aligning the valve chamber after performing the turbopower to be buried in the ground. Thus, And the drainage of collected water is smoothly performed.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a sectional view of an installation state showing a preferred embodiment of the present invention
2 is an enlarged cross-sectional view of an installation state of the exhaust valve device of the present invention
3 is an enlarged sectional view of the exhaust valve device according to the present invention
4 is a bottom perspective view of the exhaust lid of the present invention.
5 is a bottom view of the exhaust lid of the present invention.
Figure 6 is a perspective view of the buoyancy control head of the present invention
7 is an enlarged view of an operating state of the exhaust valve device of the present invention
8 is a sectional view of the height adjustment device according to the present invention
9 is an enlarged cross-sectional view of the height adjusting device of the present invention
10 is a sectional view of the bolt with respect to the height adjusting device of the present invention
Fig. 11 is a sectional view of the bolt with respect to the height adjusting device of the present invention
Figure 12 is a sectional view of the height adjuster of the present invention
Figure 13 is a section view of a combined state for the height adjuster of the present invention
Figure 14 is a side elevation view of the height adjuster of the present invention
15 is a cross-sectional view of a height-adjusted state of the present invention
16 is a side view of another embodiment of the height adjuster of the present invention
17 is a cross-sectional view of another embodiment of the height adjuster of the present invention
Figure 18 is a side view of another embodiment of the height adjuster of the present invention
19 is an enlarged cross-sectional view of the trunk reinforcing apparatus of the present invention
20 is an enlarged cross-sectional view of the main part of the present invention
21 is a front view of the body of the present invention
22 is a sectional view of the installation state of the drainage device of the present invention
23 is a plan view of the installed state of the drainage device of the present invention
24 is an enlarged cross-sectional view of a main part of the drainage device of the present invention
25 is a cross-sectional view of another embodiment of the drainage device of the present invention
26 is a plan view of another embodiment of the drainage device of the present invention

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

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a sectional view of an installation state of a preferred embodiment of the present invention,

A manhole fixing table 21 for opening and closing a manhole cover 22 installed at the same height as the ground surface is provided below the cylindrical height-regulating passage pipe 31, The body 11 is connected to an arcuate connecting portion 17 extending in the outer diameter direction in an arcuate shape at the lower end of the passage pipe 33 provided in the inner diameter of the body 31, And a valve chamber (10) in which a valve (13) for controlling the channel (16) is provided in an interior of the anchor body (11) after a valve tube (14) protruded by a flange (15) is formed.

FIG. 2 is an enlarged cross-sectional view of the exhaust valve device according to the present invention, FIG. 3 is an enlarged sectional view of the exhaust valve device according to the present invention, FIG. 4 is a bottom perspective view of the exhaust lid of the present invention, Fig. 6 is a perspective view of the buoyancy control head of the present invention, and Fig. 7 is an enlarged sectional view of the operating state of the exhaust valve device of the present invention.

The manhole cover (22) of the valve chamber (10) is molded by casting using cast iron, and the exhaust valve device (20) is installed at regular intervals in the circumferential direction.

"형의 제어공간(24)을 형성하며, 상기 제어공간(24)의 상측에는 외경으로 나사산이 형성된 나사축(29)을 포함하는 것이다.The manhole cover 22 on which the exhaust valve device 20 is installed is formed with a circular exhaust port 21. The exhaust port 21 is inclined upward to widen in an upward direction from the exhaust port 21,

Shaped control space 24 and a screw shaft 29 having an outer diameter thread formed on the upper side of the control space 24.

A space for engaging the exhaust lid 25 is formed on the outer diameter of the screw shaft 29. The exhaust lid 25 is formed in a hexagonal shape so as to be easily rotated and has a coupling shaft 25a So as to engage with the screw shaft (29);

A discharge space 25b is formed in the coupling shaft 25a at a predetermined interval so that the control space 24 and the outer surface of the manhole cover 22 are always connected so that the gas inside is discharged to the outside.

A control shaft 25c protrudes downward at the center of the exhaust lid 25 so as to control the protrusion of the buoyancy control head 26 beyond a predetermined height.

A buoyancy control shaft 27 is formed in a slope shape that engages with the control space 24 along a lower slope and is formed downward from the center of the buoyancy control head 26 formed to have an inclined surface 26a having a tip end outwardly from the upper side, A plurality of upwardly projecting control pins 28 protrude from the lower end of the buoyancy control shaft 27 so as to be hooked on the lower side of the exhaust port 21 so as to be controlled to be elevated.

The height adjusting passage pipe 31 connected to the lower side of the manhole fixing table 21 and the passage pipe 33 connected to the upper side of the arched connecting portion 17 can be adjusted in height through the height adjusting device 30,

The bottom of the body 11 is provided with a water drainage device 50 having a water collector 53 for collecting water.

FIG. 8 is a sectional view of the height adjusting device according to the present invention, FIG. 9 is an enlarged cross-sectional view of the height adjusting device of the present invention, FIG. 10 is a sectional view of the bolt, Fig. 12 is a sectional view of the height adjusting member according to the present invention, Fig. 13 is a sectional view of the height adjusting member according to the present invention, Fig. 14 is a cross- FIG. 15 is a sectional view of the height adjusting device according to the present invention.

The height adjusting device 30 forms the outer diameter holes 32 in the vertical direction at regular intervals 3 to 5 in the circumferential direction of the height adjusting passage pipe 31,

(34) in the longitudinal direction at regular intervals of 3 to 5 in the circumferential direction so as to coincide with the outer diameter hole (32) in the passage tube (33) coupled to the inner diameter of the height adjusting passage pipe (31) ,

A height adjusting hole 35 having a hole at the center is fixed to the outer diameter hole 32 or an outer diameter hole 32 and an inner diameter hole 34 are formed in the upper end of the passage pipe 33 The fixing bolt 36 is fixed by a nut 37 so as to be adjustable in height to adjust the installation position of the manhole cover 22.

FIG. 16 is a side view of another embodiment of the height adjuster of the present invention, FIG. 17 is a sectional view of another embodiment of the height adjuster of the present invention, and FIG. 18 is a side elevation view of another embodiment of the height adjuster of the present invention .

The height regulating device 30 is formed in a shape of a height adjusting member 35 of which one or two holes are formed at the center or a height of the height regulating member 35 is further increased from the inside of the lower end of the height adjusting member 35 And is fixedly installed so as to protrude into the inner diameter of the passage pipe 33. [

FIG. 19 is an enlarged cross-sectional view of the trunk reinforcing apparatus of the present invention, FIG. 20 is an enlarged cross-sectional view of the body of the present invention, and FIG. 21 is a front view of the body of the present invention.

The trunk reinforcing device 40 can weld and fix the shape reinforcing portion 41 at a constant interval to the outer diameter of the body 11, and the longitudinal reinforcing portions 41, The stiffness can be improved by further welding and fixing the metal plate 42.

The shape reinforcing portion 41 and the longitudinal reinforcing portion 42 can be formed of any one of a C-shaped steel, a strip-shaped steel, and a rectangular pipe.

The arcuate connecting portion 17 is formed in a columnar shape on the upper side and the passage pipe 33 is protruded on the upper center of the arcuate connecting portion 17 And they are connected by welding.

An epoxy coating layer 11b, an adhesive resin layer 11c and a polyethylene coating layer 11d are formed on the inner surface of the body 11, the height adjusting passage pipe 31 and the passage pipe 33, And an epoxy resin coating layer 11e is coated on the inner diameter of the metal layer 11a.

The outer diameter of the metal layer 11a can be doubly coated instead of the triple coating, and the inner diameter epoxy resin coating layer 11e is preferably coated with a spray.

The epoxy resin coating layer 11e is prepared by blending 25 to 65% by weight of an epoxy resin, 5 to 15% by weight of a ceramic mixture to be ground in a size of 200 to 600 mash, a size of 200 to 600 mash, a purity of 95 to 99% 10 to 45% by weight of a jade powder of 0.03 to 0.5% and 20 to 50% by weight of a ceramic filler, and it is possible to coat polyurea in place of the epoxy resin coating layer 11e.

FIG. 22 is a sectional view of the installation of the drainage system of the present invention, FIG. 23 is a plan view of the installed state of the drainage system of the present invention, and FIG. 24 is an enlarged sectional view of a main part of the drainage system of the present invention.

The drainage device 50 is formed by inclining the bottom inclined finishing portion 51 welded to the lower end of the body 11 toward the center and is formed at a central portion thereof with a collecting fin 51 And the grating 55 is fixed by the bolts 57 so that the floor is horizontally movable so as to be able to pass therethrough, In the modification 51, a motor pump 56 is provided to discharge moisture to the outside.

Ladders 12, 38, and 39 are installed in the inner diameter of the body 11, the height adjusting passage pipe 31, and the passage pipe 33 so as to be able to enter the inside at regular intervals.

Fig. 25 is a sectional view of another embodiment of the drainage apparatus of the present invention, and Fig. 26 is a plan view of another embodiment of the drainage apparatus of the present invention.

The drainage device 50 is installed such that the bottom inclined finishing portion 51 is inclined in either direction and at one end where the collecting floor 52 is formed on the lower side, It is possible to install the motor pump 56 and to fix the grating 55 to the grating fixture 54 with the bolts 57. [

The present invention having such a configuration is provided to protect the valve 13 to the lower side of the space provided inside the valve chamber 10 and the valve tube 14 is projected to both sides of the valve 13, The supply of the water can be controlled by controlling the valve 13 after the pipe 16 is installed in the pipe 15.

 The valve chamber 10 is installed through a turbulator. After the valve body 10 is embedded in the ground, the rigidity in the circumferential direction and the axial direction is improved through the steel reinforcing portion 43 formed at regular intervals on the outer diameter of the body 11 So that the installation state can be stably maintained so as not to be deformed due to external pressure such as earth pressure or lubrication pressure.

The shape reinforcing part 43 preferably performs a coating operation after welding the body 11 before coating. When the coating operation is finished, the shape reinforcing part 43 is welded to the outer diameter, and then the coating operation is performed again.

The arcuate connecting portion 17 connected to the upper side of the body 11 is arcuate and can withstand the earth pressure effectively even if buried in the ground.

Since the inside of the valve chamber 10 is closed by the exhaust valve device 20, the air is contaminated by the liquid passing through the valve 13 and the valve tube 14, It is installed in order to prevent the explosion which is caused by the discharge of the pressure to the outside,

When the pressure in the valve chamber 10 rises, the pressure is transmitted to the buoyancy control head 26 through the plurality of exhaust ports 21 provided in the manhole cover 22, So that the gas is prevented from being discharged to the outside. When the pressure of the gas is raised and the buoyancy control head 26 is pushed up, the exhaust port 23 is closed, The gas is exhausted to the control space 24 through the exhaust passage 24.

The gas discharged into the control space 24 is discharged to the outside through the discharge space 25b formed between the engaging shafts 25a of the exhaust lid 25 so that the internal pressure of the valve chamber 10 is improved to a predetermined pressure or higher Thereby preventing a dangerous situation from occurring.

The buoyancy control shaft 27 connected to the lower side of the outer control head 26 is connected to the exhaust port 21 through the exhaust port 21. The outer control head 26 is sloped downward to control the opening of the exhaust port 21 in the control space 24, 21 and the upwardly raised control pin 28 is hung on the lower end of the exhaust port 23 to prevent the external control head 26 from rising so as to open only a certain amount of the external control head 26, The control shaft 25c protruding downward from the center of the exhaust lid 25 prevents the control shaft 24 from rising further after the external control head 26 is raised by a predetermined amount, So that only a certain amount of air is released.

The coupling shaft 25a of the exhaust lid 25 is screwed to the screw shaft 29 formed on the upper side of the control space 24 by forming a screw in the inner diameter of the coupling shaft 25a to be the same as the height of the manhole cover 22 It is possible to prevent breakage and loss of function due to passage of a vehicle or the like, and it can be easily combined and separated by a screw type, thereby facilitating replacement, installation and inspection of parts.

A plurality of the exhaust valve devices 20 are installed on the manhole cover 22 to prevent the pressure due to the gas generated in the valve chamber 10 from rising and to prevent the manhole cover 22 from projecting more than the manhole cover 22 It is to protect against the impact of vehicles, farm machinery and human traffic.

An epoxy coating layer 11b, an adhesive resin layer 11c and a polyethylene coating layer 11d are formed on the inner surface of the body 11, the height adjusting passage pipe 31 and the passage pipe 33, And the inner diameter of the metal layer 11a is coated with either the polyurea or the epoxy resin coating layer 11e so as to prevent the metal layer 11a from being easily corroded or deformed even after being buried in the ground.

When the height of the valve chamber 10 is not equal to the initial design value, the height adjustment device 30 may be constructed so that the height of the valve chamber 10 can be improved. It is necessary to adjust the height in order to improve it.

When the installation position of the manhole cover 22 is not aligned with the ground surface when the manhole cover 22 is installed through the height adjusting passage pipe 31, it is installed in the outer diameter hole 32 and the inner diameter hole 34 of the height adjusting device 30 By adjusting the height of the height adjusting passage pipe 31 by loosening the fixing bolt 36 and the nut 37,

The height of the manhole cover 22 is adjusted so that the height of the manhole cover 22 is adjusted to the height of the ground surface and then the height adjuster 35 is positioned at the top end of the passage pipe 33, The fixed bolt 36 and the nut 37 are fixed to the outer ring 32 and the inner ring hole 34 and the fixing bolt 36 and the nut 37 are engaged with each other, .

The distance between the outer diameter holes 32 is preferably about 5 mm, the height of about 30 mm can be adjusted, and if necessary, the number of the outer diameter holes 32 and the inner diameter holes 34 can be adjusted to adjust the height It is possible.

A height adjusting passage pipe 31 is disposed on the outer diameter of the passage pipe 33 so that foreign substances such as moisture can be prevented from penetrating from the outside to the inside and fixing bolts 36 It is possible to use only the fixing bolt 36 and the nut 37 in the height adjuster 35 and the outer diameter hole 32 without using the nut 37 and the outer diameter hole 32 and the inner diameter hole 32. In this case, (34) is sealed with a packing or an adhesive to prevent the penetration of moisture or foreign matter.

The drainage device 50 installed on the bottom of the body 11 is formed so that the bottom inclined closing part 51 is inclined toward the center part from the lower end of the body 11. Therefore, And when the water level is formed in the water collecting unit 53, the motor pump 56 senses the water level and pumps the water in the water collecting unit 53 to the outside.

The grating 55 is formed on the upper side of the collecting unit 53 of the drainage unit 50 and the grating 55 is installed on the upper side and fixed with the bolts 57. Thus, So that the operator can freely pass by entering the apparatus, and the control of the valve 13 can be performed conveniently.

The bottom inclined finishing portion 51 is formed so as to form an overall inclined face toward one direction and the drainage device 50 having the collecting cores 53 formed at one end thereof is provided at the lower end of the body 11, Water and water generated in the interior of the water collecting unit 53 collect in the collecting unit 53 through the bottom inclined finishing unit 51. When the motor pump 56 senses the water level and reaches a predetermined water level or more, And it is possible to easily pass and work through the grating 65 fixed on the upper side with the bolts 57 so that the floor is not slippery.

The present invention provides a valve seat that is naturally exhausted to the outside when the gas pressure inside the valve chamber exceeds a certain level through the exhaust valve device to securely protect the valve chamber and to improve the rigidity to coat and reinforce the body, In addition, it is possible to easily adjust the height when the height is not matched, and at the same time, to provide a very useful invention for collecting water and water generated in the interior by collecting the collected water.

10: valve chamber 11: body
12, 38, 39: ladder 13: valve
14: valve tube 15: flange
16: channel 17: arched connection
20: Exhaust valve device 21: Manhole fixture
22: Manhole cover 23: Exhaust port
24: control space 25: exhaust lid
25a: Coupling shaft 25b: Discharge space
25c: control shaft 26: magnetic force control head
26a: slope 27: buoyancy control axis
28: Lift control pin 29: Screw shaft
30: height adjusting device 31: height adjusting passage pipe
32: outer diameter hole 33: passage tube
34: inner diameter hole 35: height adjustment hole
36: Fixing bolt 37: Nut
40: trunk reinforcing device 41:
42: longitudinal reinforcing portion 50: drainage device
51: bottom inclined finishing portion 52: collecting floor
53: Correction 54: Grating Fixture
55: Grating 56: Motor pump
57: Bolt

Claims (10)

An arcuate connecting hole 17 is connected to a flange 15 of a valve tube 14 connected to a valve 13 provided in the upper portion of the body 11 connecting the conduit 16, The height of the manhole cover for the valve room to which the exhaust valve is attached to the manhole fixing table 21 formed on the upper side of the height adjusting passage pipe 31 is connected to the passage pipe 33 and the height adjusting passage pipe 31 on the upper side of the height adjusting passage pipe 31 In regulating and draining equipment,
And a screw shaft 29 is formed at an upper portion of a control space 24 formed above the exhaust port 23 at a predetermined interval in the circumferential direction of the manhole cover 22. The control space 24, The buoyancy control shaft 27 protruding to the lower side of the buoyancy control head 26 located at the lower end of the buoyancy control head 26 is provided so as to pass through the exhaust port 23 and the engagement hole 25a engaged with the screw shaft 29 is provided with a discharge space 25b An exhaust valve device (20) for engaging an exhaust lid (25) having an exhaust valve
An outer diameter hole 32 is formed at a predetermined interval in the height adjusting passage pipe 31 and an inner diameter hole 34 is formed in the passage pipe 33 at regular intervals. A height adjusting device 30 which is provided with an adjusting hole 35 and which is fixed to the outer diameter hole 32 by a fixing bolt 36 and a nut 37;
A shape reinforcement 41 is provided at an outer diameter of the outer diameter of the body 11 and an epoxy coating layer 11b, an adhesive resin layer 11c and a polyethylene coating layer 11c are formed on the outer surface of the metal layer 11a of the body 11 (11d), and the inner layer of the metal layer (11a) is made of any one of a polyurea and an epoxy resin coating layer (11e);
The epoxy resin coating layer 11e is prepared by blending 25 to 65% by weight of an epoxy resin, 5 to 15% by weight of a ceramic mixture to be ground in a size of 200 to 600 mash, a size of 200 to 600 mash, a purity of 95 to 99% 10 to 45 wt% of a jade powder of 0.03 to 0.5 wt%, and 20 to 50 wt% of a ceramic filler;
A motor pump 56 is installed in the collecting corrugation 53 in which the bottom inclined finishing portion 51 is formed from the lower end of the body 11 toward the central horizontal collecting floor 52, And a drainage device (50) for installing a grating (55) on a grating fixing base (54) provided on the floor (51) for adjusting the height of the manhole cover for a valve room.
delete delete delete The method according to claim 1,
The height adjusting device 30 is formed by forming an outer diameter hole 32 at a predetermined interval in the height adjusting passage pipe 31 and inserting the inner diameter hole 32 in the passage pipe 33 located at the inner diameter of the passage pipe 31, A height adjuster 35 for fixing the height of the passage pipe 33 is fixed to the outer diameter hole 32 by a fixing bolt 36 and a nut 37,
The height adjuster 35 is formed in the shape of """, or is folded once again from the inside of the lower end to the lower side and is projected and fixed to the inside diameter of the passage pipe 33,
A height adjusting hole 35 is formed in the outer diameter hole 32 of the height adjusting passage pipe 31 to adjust the height of the height adjusting hole 35, The fixing bolt 36 and the nut 37 are coupled to and connected to the inner diameter hole 34 of the cylinder head 20,
The height control passage tubes 31 and 33 are formed of an epoxy coating layer 11b, an adhesive resin layer 11c and a polyethylene coating layer 11d on the outer diameter of the metal layer 11a. The inner diameter of the metal layer 11a is made of polyurea and epoxy resin And a coating layer (11e);
The epoxy resin coating layer 11e is prepared by blending 25 to 65% by weight of an epoxy resin, 5 to 15% by weight of a ceramic mixture to be ground in a size of 200 to 600 mash, a size of 200 to 600 mash, a purity of 95 to 99% 10 to 45 wt% of a jade powder of 0.03 to 0.5 wt%, and 20 to 50 wt% of a ceramic filler, wherein the exhaust valve is mounted. delete delete delete delete delete

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