KR20150012900A - Gas flow control valve and double glazing comprising the same - Google Patents

Abstract

A gas flow control valve according to an embodiment of the present invention includes an insertion unit inserted into a through hole formed on plate glass where a screw-shaped tap structure is formed on the inner surface; a body protruding from the surface of the plate glass and including a projection unit where a screw-shaped tap structure is formed on the outer surface; a sealing bolt joined to the screw-shaped tap structure formed on the inner surface of the insertion unit to seal the space between the plate glass; and a bolt cap joined to the screw-shaped tap structure formed on the outer surface of the projection unit and having a cavity unit by sealing the upper part of the projection unit.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a gas flow control valve,

The present invention relates to a gas flow control valve. More particularly, the present invention relates to a gas inflow / outflow control valve for controlling gas inflow and outflow between two-layer glass.

I have been using glass for a long time in order to secure the mining and openness of the building. Especially recently, glass is installed on the entire outer wall of the building to enhance the beauty of the building as well as the view and mining. However, buildings constructed using glass are difficult to secure insulation in winter due to the nature of materials, and in the summer, there is a problem in efficiency of cooling due to high sunlight permeability.

In order to overcome the problems of such a glass construction building, a multi-layered glass is designed, a space formed between the multi-layered glass, a spacer is kept in a vacuum state, or an inert gas such as dry air or argon or krypton is injected, The periphery of the glass is sealed with a butyl-based resin and a silicone-based resin. Such a double-layered glass shields the outside air and lowers the thermal conductivity with the outside, thereby increasing the heat insulation and the cooling efficiency in the building.

However, since the double-layered glass is exposed to the external atmosphere for a long period of time during the four seasons, the butyl-based resin and the silicon-based resin at the periphery of the double-layered glass are aged and the sealed state between the glass is poor, so that moisture or outside air penetrates into the spacer between the double- Or an inert gas such as argon or krypton is lost to damage the coating film or deteriorate the heat insulating performance. As a result, there has been a need for an operation to replenish the gas in the space between the two-layered glass or to discharge the introduced air back to the outside to keep it in a vacuum state.

Quot; Application No. 10-2008-0103460 " filed on October 22, 2008 as a prior art, "Vacuum Double Layer Glass (Application No. 10-2006-0001584)" . 11 filed "Double Layer Glass (Application No. 10-2010-0044060)"

In the above-mentioned invention, the hole filling the argon or krypton gas as the conventional inert gas is formed in the corner key shape, the hole is filled, the gas is filled, and the cap is sealed with the cap or cap. Once completed, the completed two-layer glass can not be refilled with the leaked gas until the two-layer glass is dismantled.

As a result, there has been a need for a control valve for refilling the gas or discharging the introduced gas to the outside without disassembling the double-layer glass in a state where the construction is completed in the building.

According to an embodiment of the present invention, there is provided a gas inflow / outflow control valve for refilling a gas without disassembling the multilayer glass or for discharging inflow gas to the outside to maintain a vacuum state.

According to an embodiment of the present invention, there is provided a gas inflow / outflow valve for controlling gas inflow and outflow in a space between a pair of plate glass, comprising: an insertion portion inserted into a through hole formed in a plate glass and having a screw- A main body including a projecting portion projecting from the surface and having a screw-shaped tab structure formed on an outer surface thereof, a sealing bolt fastened to a screw-shaped tab structure formed on an inner diameter surface of the insertion portion to seal a space between the pair of plate glass, And a bolt cap which is fastened to the tab-shaped tab structure formed on the surface and seals the upper portion of the protrusion to form a cavity.

In an embodiment, the insertion portion may be fixed to the through-hole by an adhesive member, and the gas flow-in control valve may further include a sealing O-ring formed between the insertion portion and the through-hole.

As an example, the material of the sealing O-ring may be a rubber resin.

As an embodiment, the gas inflow / outflow control valve includes a toothed wrench bolt which is located under the sealing bolt fastened to the insertion part and is screwed into the insertion part, and includes an elastic member formed between the toothed wrench bolt and the sealing bolt can do.

As an embodiment, the gas inlet / outlet control valve may further include a sealing bolt O-ring made of a rubber resin material formed between the lower portion of the head of the sealing bolt and the inner surface of the projection.

As an embodiment, the gas inflow / outflow control valve may further include a first cap O-ring formed between the inner diameter of the bolt cap and the outer diameter of the protrusion, a second cap O-ring formed between the lower inner diameter of the bolt cap and the outer diameter of the protrusion And the material of the first cap o-ring and the second cap o-ring may be silicone resin.

In an embodiment, the gas inlet / outlet control valve may include a gas injection portion for supplying gas to the cavity portion above the bolt cap, the gas injection portion including an injection bolt fastened to the bolt fastener formed on the upper portion of the bolt cap, And an injection o-ring made of a rubber material between the inner surface of the bolt cap and the inner surface of the bolt cap.

The effect according to an embodiment of the present invention is as follows.

First, it is possible to fill gas between glass without disassembling the multi-layer glass.

Second, the leakage of charged gas can be prevented.

Third, it is possible to check relatively easily gas leaks or gas inflows between the multilayer glasses.

Fourth, image distortion due to glass can be prevented by keeping the gas pressure inside the spacer between the glass plates of the multi-layer glass.

Fifth, it is economical to improve and maintain the heat insulation and cooling efficiency even though the double-layered glass is used without using the expensive insulating glass.

1 is a cross-sectional view of a plate glass provided with a gas inflow / outflow control valve according to an embodiment of the present invention.
2 is an exploded perspective view of a gas inflow control valve according to an embodiment of the present invention.
3 is a three-dimensional perspective view of a bolt cap according to an embodiment of the present invention.
4 is a cross-sectional view of a gas flow control valve according to an embodiment of the present invention.
5 is a sectional view of a gas inflow control valve including a tundown wrench bolt and an elastic member according to an embodiment of the present invention.
6 is a cross-sectional view of a gas inflow control valve including a gas injection portion according to an embodiment of the present invention.
7 is a perspective view of a multi-layer glass provided with a gas flow control valve according to an embodiment of the present invention.

Embodiments may be embodied in many different forms and are not construed as limited to the aspects set forth herein. Rather, the aspects allow the embodiments to be more thorough and complete, and will allow those skilled in the art to fully convey the scope of the embodiments. The gas inflow control valve according to the embodiment of the present invention is applied to a double glass (a pair of glass plates) for convenience of explanation, but can also be applied to a multi-layer glass of a triple or more glass.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a first embodiment of the present invention will be described in detail with reference to the drawings.

1 is a cross-sectional view of a plate glass provided with a gas inflow / outflow control valve according to a first embodiment of the present invention.

2 is an exploded perspective view of a gas flow control valve according to a first embodiment of the present invention.

As shown in FIG. 1, a gas inflow / outflow control valve 10 for injecting or discharging a gas between two-layer glass includes a main body 100 including an insertion portion 110 and a protrusion 120, And a bolt cap 300 coupled to an upper portion of the protrusion 120 to form a hollow portion 600.

The main body 100 includes an insertion portion 110 having the same size and cross-section as the through-hole so as to be inserted into the through-hole formed in the plate glass. The shape of the insertion portion 110 is preferably a cylindrical shape, but is not limited thereto. The insertion portion 110 is a direct gas flow-in passage. A threaded tab structure is formed on the inner diameter surface of the insertion portion 110.

The inserting portion 110 is coupled to the through hole formed in the plate glass to be fixed to the plate glass, and at the same time the sealing bolt 200 is fastened. When inserting the insertion portion 110 of the main body 100 and the through hole so as to prevent gas from flowing out through the space between the insertion portion 110 of the main body 100 and the through hole, Is filled with an adhesive member.

As the adhesive member, a sealing material 112 in a liquid or paste state can be used. The sealing member 112 has a strong adhesive force so that the valve can withstand physical external force, external pressure, and shock. As the material of the sealing material 112, polysulfide, silicone, or a polyurethane-based sealant can be used.

By the hole machining, the stress is concentrated on the polished surface of the glass and becomes vulnerable to external pressure. In order to protect these vulnerable polished surfaces, pretreatment or primer coating treatment can be performed with a coating material having good impact resistance prior to application of sealant. The coating material may include any one selected from the group consisting of urethane, epoxy, acrylic, polyester, olefin, and melamine, and may include any one selected from polyamines, polyamides, and polysulfides .

The main body 100 includes protrusions 120 protruding from one surface of the plate glass. The protrusion 120 is integral with the insertion section 110, and the outer diameter surface of the protrusion 120 forms a threaded tab structure. The size of the horizontal cross-section of the protrusion 120 is equal to or greater than the horizontal cross-sectional size of the insertion section 110. The protrusion 120 is combined with the bolt cap 300 to form a cavity 600.

The material of the main body 100 is a general purpose high strength engineering such as metal or PA (polyamide), PC (polycarbonate), POM (polyoxymethylene), PBT (polybutylene terephthalate), mPPO (modified polyphenylene oxide) It may be a plastic having excellent mechanical properties such as plastic and ABS resin.

The sealing bolt 200 is fastened to a screw-shaped tab structure formed on an inner diameter surface of the insertion part 110 to prevent gas flow between the plate glass through the insertion part 110 and to form a sealed space between the plate glass. The sealing bolt 200 is tightened through the screw-shaped tab structure formed in the insertion portion 110 of the main body 100 and is lowered. When the sealing bolt 200 is in a general bolt shape and the sealing bolt 200 is fastened to the insertion part, the head of the sealing bolt 200 is configured to completely cover the upper surface of the insertion part 110.

The material of the sealing bolt 200 may be a metal such as a material of the main body 100 or a metal such as PA (polyamide), PC (polycarbonate), POM (polyoxymethylene), PBT (polybutylene terephthalate), mPPO High-strength engineering plastics such as phenylene oxide), and ABS resins.

The inner diameter of the bolt cap 300 may be the same as the outer diameter of the protrusion 120 of the main body 100. The bolt cap 300 is fastened to the protrusion 120 of the main body 100 by rotating it. The cavity portion 600 is formed by tightening the bolt cap 300 with the protrusion 120 and the cavity portion 600 is formed by the sealing bolt 200 so that the sealed space between the plate- Thereby closing the gas flow. An opening / closing groove 310 may be formed on the upper surface of the bolt cap 300 so that a " C "-shaped wrench or a screwdriver can be inserted to facilitate opening and closing by rotation.

The material of the bolt cap 300 may be a metal in consideration of appearance, and may be a metal having excellent corrosion resistance, chemical resistance, and weather resistance.

The gas inlet and outlet control valve 10 according to the first embodiment of the present invention is configured such that the insertion portion 110 of the main body 100 is coupled to the through hole formed in the plate glass and inserted into the insertion portion 110 of the main body 100, The bolt cap 300 is fastened so as to cover the upper portion of the protrusion 120 of the main body 100.

In addition, the gas inflow / outflow control valve 10 according to the first embodiment of the present invention is configured such that the main body 100, the sealing bolt 200, and the bolt cap 300 are fastened to each other using a screw- And further includes a circular O-ring to prevent the gas from flowing out.

The material of the O-rings (sealing o-ring, sealing bolt O-ring, first cap o-ring, and second cap o-ring) included in the gas inflow control valve according to the first embodiment of the present invention may be rubber resin, It may be IIR (isobutylene isoprene rubber or butyl rubber) having low gas permeability (or excellent airtightness) in order to prevent deformation even when exposed to sunlight for a long time and to prevent inflow of dry air or inert gas filled between glass. (Acrylonitrile butadiene), HNBR (hydrogenated acrylonitrile butadiene), EPDM (ethylene propylene diene), FKM (fluorocarbon), CR (neoprene) and FFPM (overburden) in place of IIR (butyl rubber) (Elastomer), PTFE (polytetrafluoroethylene), and the like.

2, the gas inlet / outlet control valve 10 according to the first embodiment of the present invention includes a sealing O-ring 410 formed between the insertion portion 110 of the main body 100 and the through-hole. The sealing O-ring 410 is engaged with a sealing O-ring locking groove 510 formed along the circular surface of the outer circumferential surface of the insertion portion 110 of the main body 100. The sealing O-ring fastening recess 510 may be formed at the lower surface of the insertion portion 110. The sealing O-ring 410 fastened to the sealing O-ring fastening recess 510 may have a through- But blocks gas flowing into or out of the enclosed space between the plate glasses.

The gas inflow control valve 10 according to the first embodiment of the present invention includes a sealing bolt O-ring 420 that prevents gas from flowing out between the lower portion of the head of the sealing bolt 200 and the main body 100.

1, when the sealing bolt 200 is fastened through the insertion part 110 of the main body 100, the head of the sealing bolt 200 abuts against the inner surface of the protrusion 120 of the main body 100. The sealing bolt 200 and the insertion portion 110 of the main body 100 are coupled with each other through the screw connection and the gap between the sealing bolt 200 and the insertion portion 110 of the main body 100 The gas may flow into or out of the enclosed space of the apparatus. A sealing bolt O-ring 420 is coupled between the lower portion of the head of the sealing bolt 200 and the inner surface of the protrusion 120 of the main body 100 to prevent such gas from flowing out. The diameter of the sealing bolt O-ring 420 may be the same as the diameter of the sealing bolt 200 and the sealing bolt 200 is bonded to the sealing bolt O-ring fastening groove 520 formed at the lower portion of the head.

The gas inflow control valve 10 according to the first embodiment of the present invention includes a first cap O ring 430 formed between an inner diameter upper portion of the bolt cap 300 and an outer diameter upper portion of the protrusion 120 of the main body 100 And a second cap O ring 440 formed between the lower inner diameter of the bolt cap 300 and the lower outer diameter of the protrusion.

A tab-shaped tab structure formed on the inner diameter of the bolt cap 300 and a threaded tab structure formed on the outer diameter of the protrusion 120 of the main body 100 are screwed together to form the cavity portion 600. The first cap O-ring 430 and the second cap O-ring 440 are coupled between the bolt cap 300 and the protrusion 120 to seal the cavity 600 from the outside. In particular, the second cap O-ring 440 is formed by sealing the gas that can flow in and out between the insertion portion 110 of the main body 100 fixed with a sealing agent and the through hole formed in the plate glass, In addition, it plays a role of sealing.

3 is a perspective view of a bolt cap according to a first embodiment of the present invention.

As shown in FIG. 3, the first cap O-ring 430 is attached to a first cap O-ring engagement groove 530 formed on the inner diameter of the cap O-ring 430. The second cap O-ring 440 is engaged with a second cap O-ring engagement groove 540 formed on the inner diameter of the O-ring. The cavity 600 formed between the main body 100 and the cap o-ring 300 is completely sealed from the outside by the first cap-ring 430 and the second cap-o-ring 440.

A method of joining the gas flow control valve 10 according to the first embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG.

In order to mount the gas inflow control valve 10 according to the first embodiment of the present invention on the multilayer glass, a glass hole into which the insertion portion 110 of the main body 100 can be inserted is formed on one side of the glass plate, Is formed by using a hollow ball. At this time, it is preferable to use the gas suction tube so that the glass powder or foreign matter caused by the core ring or the hole can not enter the inside of the spacer.

The sealing O-ring 410 is fastened to the sealing O-ring fastening groove 510 formed in the insertion part 110 of the main body 100 and the main body 100 is inserted into the through hole Lt; / RTI > A sealing agent 112 is injected between the inserting portion 110 of the main body 100 and the through hole to fill the gap between the inserting portion 110 of the main body 100 and the through hole and the sealing bolt O- The sealing bolt 200 mounted on the fastening groove 520 is rotated and inserted into the insertion portion 110. The sealing bolt O-ring 420 prevents the gas from flowing out due to the clearance that can be formed between the sealing bolt 200 and the insertion portion 110 of the main body 100. The second cap o-ring 440 is fastened to the lower portion of the protrusion 120 of the main body 100 to rotate the cap o-ring 300 equipped with the first cap o-ring 430 to form the cavity portion 600 And engages with the projecting portion 120 of the main body 100. The gas can be prevented from flowing out by the first cap O-ring 430 and the second cap O-ring 440 due to the clearance formed between the protrusion 120 of the main body 100 and the cap O-ring 300, 2 cap O-ring 440 functions to prevent gas flow between the insertion portion 110 of the main body 100 and the through-hole, which may occur despite sealing by the sealing O-ring 410 and the sealing agent 112, do.

The bolt cap 300 of the gas inflow / outflow control valve 10 according to the first embodiment of the present invention is removed and the sealing bolt 200 is removed from the sealing bolt 200 in order to inject gas into the sealed space between the glass panes of the multi- To secure the gas inlet / outlet passage, and then the gas is injected or the introduced gas is extracted.

The gas inflow control valve 10 according to the first embodiment of the present invention includes a main body 100 to be inserted into a through hole formed at one side of a glass plate, a sealing bolt 200 and a bolt cap 300, 200 and the bolt cap 300 are tightened to control the gas flow into and out of the spacer between the two-layer glasses including two or more glass plates.

The second embodiment of the present invention is such that the lower surface of the protrusion 120 in the main body 100 of the gas inflow control valve 10, that is, the portion of the sealing bolt 200, As shown in Fig. Hereinafter, a gas flow control valve 10 according to a second embodiment of the present invention will be described with reference to FIG. However, the description of the configuration overlapping with the first embodiment will be omitted.

4 is a cross-sectional view of a gas flow control valve according to a second embodiment of the present invention.

As shown in FIG. 4, the sealing bolt 200 of the gas inflow control valve 10 according to the second embodiment of the present invention is a dish head bolt. When the sealing bolt 200 is fastened to the main body, the lower portion of the dish head of the sealing bolt completely abuts the lower surface of the protrusion 120 of the main body 100. When the sealing bolt 200 is engaged with the main body 100, the sealing bolt 200 and the insertion portion 110 of the main body 100 are tightly sealed to prevent gas from flowing in and out. In order to make the thickness of the main body 100 constant, the upper part of the through hole formed in the plate glass is obliquely etched so as to coincide with the bottom surface of the dish head of the sealing bolt 200. However, even if a cylindrical through hole is formed without etching the upper portion of the through-hole so as to conform to the shape of the sealing bolt, only the lower surface of the protruding portion 120 abutting the main body 100 of the gas inflow control valve and the sealing bolt 200 is processed The sealing bolt 200 can be fastened.

The sealing bolt 200 is not limited to the plate head bolt. Various types of sealing bolts 200 such as a hexagon washer head bolt, a truss head bolt, and a bind head bolt may be used. The shape of the lower surface of the protrusion 120 of the main body 100 varies depending on the shape.

According to the gas inflow control valve of the second embodiment of the present invention, the connection between the sealing bolt and the main body is more rigid, thereby blocking the gas flowing into the sealed space between the two-layered glass.

The gas inflow control valve 10 according to the third embodiment of the present invention is disposed at the lower portion of the sealing bolt fastened to the insertion portion and is screwed to the insertion portion to tightly close the space between the plate glasses, And includes an elastic member formed between the tundish wrench bolt and the sealing bolt. Hereinafter, a gas flow control valve according to a third embodiment of the present invention will be described with reference to FIG. Description of configurations overlapping with those of the previous embodiment will be omitted.

5 is a sectional view of a gas inflow control valve including a tundish wrench bolt and an elastic member according to a third embodiment of the present invention.

As shown in FIG. 5, the gas inlet / outlet control valve 10 according to the third embodiment of the present invention is formed by inserting the tundra wrench bolt 210 into the insertion portion 110 to be primarily sealed, The elastic member 230 is inserted before the sealing bolt 200 is inserted. After the elastic member 230 is inserted into the upper part of the tundish wrench bolt 210, the sealing bolt 200 is threadedly engaged with the insertion part 110. The inserted elastic member 230 is compressed as the sealing bolt 200 is tightened. When the tightening of the sealing bolt 200 is completed and the lower portion of the head of the sealing bolt is brought into contact with the inner surface of the protruding portion 120 as in the first and second embodiments of the present invention, . A repulsive force acts between the tundish wrench bolt 210 and the sealing bolt 200 due to the expansion of the elastic member 230. Due to this repulsive force, the fine space formed between the insertion portion 110 and the tundish wrench bolt 210, the insertion portion 110 and the sealing bolt 200 is filled, and the gas is prevented from flowing between the fine spaces . In addition, when the sealing bolt 200 strongly compresses the elastic member 230, there is a possibility of damage, so that a plastic member having a high mechanical strength can be additionally inserted or attached to the elastic member 230, or a thin metal plate can be attached.

The gas flow control valve 10 according to the fourth embodiment of the present invention further includes a gas injection part 700 which is a passage for supplying gas to the cavity part 600. [ Hereinafter, a gas flow control valve 10 according to a fourth embodiment of the present invention will be described with reference to FIG. However, the description of the configuration overlapping with the preceding embodiment will be omitted.

6 is a cross-sectional view of a gas inflow control valve including a gas injection unit according to a fourth embodiment of the present invention.

6, a bolt fastening hole 730 is formed on an upper portion of the bolt cap 300, and a threaded tapping structure is formed on the surface of the bolt fastening hole 730. As shown in FIG. An injection bolt 710 is fastened to a bolt fastening hole 730 formed on an upper portion of the bolt cap 300 and an injection o-ring 750 made of a rubber resin material is inserted between the injection bolt 710 and the upper part of the inner surface of the bolt cap 300 . The diameter of the injection bolt 710 may be smaller than the diameter of the sealing bolt 200, and the injection bolt 710 has no fastening groove unlike the sealing bolt 200. The injection bolt 710 may be but is not necessarily limited to a plate head bolt.

When the gas supply line is not connected to the bolt cap 300, the injection o-ring 750 is coupled to the inner surface of the bolt cap 300 to prevent the gas from flowing into the cavity 600. Alternatively, when the gas supply line is connected to the bolt cap 300, gas is introduced from the outside into the space between the injection bolt 710 and the bolt fastening hole 730, and the elastic injection O- And a space is formed between the injection bolt 710 and the injection O-ring 750 to introduce the gas. And opens the cavity portion 600 from the gas supply line. When the gas is introduced from the gas supply line and filling of the cavity 600 is completed, the injection O-ring 750 is coupled to the upper part of the inner surface of the bolt cap 300 due to the restoring force due to the characteristics of the material, Thereby preventing gas flow between the fastening holes 730.

By supplying the gas to the cavity 600 through the gas injecting part 700 formed on the upper part of the bolt cap 300, the gas pressure inside the cavity 600 is lower than the gas pressure of the space between the glass plates of the multi- So as to prevent the gas flow in the sealed space between the plate glasses. The gas pressure inside the cavity 600 is checked to determine the gas leakage between the bolt cap 300 and the protrusion 120 of the main body 100 when the pressure is lowered, It is determined that there is an inflow or outflow.

7 is a perspective view of a multi-layer glass provided with a gas flow control valve according to an embodiment of the present invention.

As shown in FIG. 7, the size of the gas inflow / outflow control valve 10 installed in the multilayer glass is not limited, but it is better that the gas inflow control valve 10 is smaller in appearance. In order to completely discharge and charge the air and inert gas filled in the glass plate, at least two gas flow control valves 10 are preferably provided. Further, the position where the gas inflow / outflow control valve 10 is provided is not particularly limited, but it is preferable that the position is provided on the indoor side of the multilayer glass so that the gas inflow / outflow control is easy.

As described above, the double-layered glass in which the gas flow control valve 10 according to the embodiment of the present invention is installed can charge the gas inside the spacer between the glass plates or discharge the introduced gas without disassembling or disassembling it. It is also possible to check the gas pressure in the cavity to judge whether the gas flows out or not.

100 Body 110 Insertion part
112 sealing member 120 protrusion
200 sealing bolt 210 moon wrench bolt
230 Elastic member 300 bolt cap
310 Opening and Closing Holes 410 Sealing O-rings
420 sealing bolt O-ring 430 1st cap O-ring
440 Second cap O-ring 510 Sealing O-ring Fastening groove
520 Sealing bolt O-ring fastening groove 530 First cap O-ring fastening groove
540 Second cap O-ring fastening groove 600 Cavity
700 gas injection part 710 injection bolt
730 bolt tightening hole 750 injection o-ring

Claims (11)

A gas inflow / outflow valve (10) for controlling gas inflow and outflow in a space between a pair of plate glass,
(110) inserted into a through hole formed in a plate glass and having a screw-like tab structure formed on an inner surface thereof, and a protrusion (120) protruding from the surface of the plate glass and having a screw- A main body 100;
A sealing bolt 200 fastened to a screw-shaped tab structure formed on an inner diameter surface of the insertion part 110 to seal a space between the pair of plate glass; And
And a bolt cap (300) fastened to a threaded tab structure formed on an outer diameter surface of the protrusion (120) to seal the upper portion of the protrusion (120) to form a cavity (600) Control valve. The method according to claim 1,
Wherein the inserting portion (110) is fixed to the through hole by an adhesive member. The method according to claim 1,
Further comprising a sealing O-ring (410) formed between the insertion portion (110) and the through-hole. The method of claim 3,
Wherein the sealing O-ring (410) is made of a rubber resin. The method according to claim 1,
And a tundish wrench bolt 210 which is positioned at a lower portion of the sealing bolt 200 fastened to the insertion part 110 and is screwed to the insertion part 110. The tundish wrench bolt 210, And an elastic member (230) formed between the sealing bolts (200). The method according to claim 1,
Further comprising a sealing bolt O-ring (420) made of a rubber resin material formed between a lower portion of the head of the sealing bolt (200) and an inner surface of the protrusion (120). The method according to claim 1,
A first cap O-ring 430 formed between the inner diameter of the bolt cap 300 and the outer diameter of the protrusion 120; And a second cap O-ring (440) formed on the second cap. 8. The method of claim 7,
Wherein the material of the first cap O-ring (430) and the second cap O-ring (440) is rubber resin. The method according to claim 1,
And a gas injection unit (700) for supplying gas to the cavity (600) on the bolt cap (300). 10. The method of claim 9,
The gas injection unit 700 includes an injection bolt 710 which is fastened to a bolt fastening hole 730 formed on an upper portion of the bolt cap 300. The injection bolt 710 and the inner surface of the bolt cap 300 And an injection o-ring (750) made of a rubber material between the upper portion and the upper portion. A multi-layer glass comprising the gas inlet / outlet control valve (10) of claim 1.

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