KR20150078188A - Double-disc type butterfly valve having preliminary seal - Google Patents
Double-disc type butterfly valve having preliminary seal Download PDFInfo
- Publication number
- KR20150078188A KR20150078188A KR1020130167361A KR20130167361A KR20150078188A KR 20150078188 A KR20150078188 A KR 20150078188A KR 1020130167361 A KR1020130167361 A KR 1020130167361A KR 20130167361 A KR20130167361 A KR 20130167361A KR 20150078188 A KR20150078188 A KR 20150078188A
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- KR
- South Korea
- Prior art keywords
- valve body
- disk
- fixing member
- seat ring
- metal sheet
- Prior art date
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Abstract
The present invention relates to a butterfly valve, comprising: a first disk and a second disk which are rotatably mounted in a valve body and open and close a flow path of the valve body and installed facing each other at regular intervals; A first sealing portion provided between the outer circumferential surface of the disc and the inner circumferential surface of the valve body to be pressurized when the conduit is closed to block the leakage of water and a second sealing portion provided between the outer circumferential surface of the second disc and the inner circumferential portion of the valve body, A double disc type butterfly valve is provided which has a spare chamber including a second sealing portion for blocking the leakage of water.
Description
BACKGROUND OF THE
In general, a valve is installed in a part of a pipe formed by a pipe or the like which forms a passage of a fluid, and is a device that allows the flow to be stopped or the flow of the fluid to be controlled.
Among these valves, the butterfly valve is configured to open and close the conduit according to the rotation of the disk provided inside the valve body. Butterfly valves are typically installed between piping and are fastened to piping by fastening means such as bolts and nuts.
Despite the engagement with such pipes, when the hydraulic pressure is large, there is a case where the fluid leaks between the disk and the valve body when the valve is closed.
In particular, in the case of a double disc type butterfly valve, it is required to seal each of the two discs.
SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a double disc butterfly valve which is more simply and conveniently fastened to a piping and is further complemented with sealing of a fluid.
In one or more embodiments of the present invention, there is provided a valve assembly comprising: a valve body installed between piping; A first disk and a second disk rotatably installed inside the valve body and opening and closing the flow path of the valve body and facing each other at regular intervals; A first sealing part installed between the outer circumferential surface of the first disk and the inner circumferential part of the valve body so as to be squeezed when the conduit is closed; And a second sealing part provided between the outer circumferential surface of the second disk and the inner circumferential surface of the valve body to be pressurized when the conduit is closed so as to block the leakage of water. The first sealing part is formed inside the valve body, Providing a pneumatic delivery passage; And a first portion is disposed inside the valve body and connected to the pneumatic pressure providing passage and the second portion includes an annular rubber seat ring protruding outside the valve body and closely contacting the outer circumferential surface of the first disk A double disk butterfly valve having a reserve chamber can be provided.
Wherein the rubber seat ring includes a seat ring insertion portion protruding from the valve body toward the first disk and a second ring member formed on an outer side of the seat ring insertion portion and interposed between the first fixing member engaged with the seat ring insertion portion, So as to be movable.
The rubber seat ring is characterized in that a portion in contact with the first disk is formed to be inclined downward toward the inside of the valve body.
The seat ring insertion portion includes a first fixing bolt passing through a first fixing bolt through hole formed in the first fixing member and inserted and fixed in a first fixing bolt insertion groove formed in the seat ring insertion portion, And is coupled to the first fixing member by a first adjusting bolt passing through the first adjusting bolt through-hole formed in the member and contacting the surface of the seat ring insertion portion.
An O-ring may be formed between the fixing member and the seat ring insertion portion, and the second disk may be formed with protrusions protruding from the outside.
The second sealing portion may include an annular metal sheet formed between the projection of the second disk and the valve body; A second fixing member coupled to the metal sheet to adhere the metal sheet to the second disk; And a second adjusting unit inserted into the second fixing member to adjust a gap between the metal sheet and the second disk.
The metal sheet is formed in a " C "shape, and has an upper portion in contact with the projection; A lower portion slidingly contacting the surface of the body; And a connection part connecting the upper part and the lower part.
The second adjusting unit is inserted into a second fixing bolt insertion groove formed in the metal sheet and passes through a second fixing bolt through hole formed in the second fixing member, Fixing bolt; And an adjusting bolt formed through the second adjusting bolt through-hole formed in the second fixing member and formed in contact with the surface of the metal sheet.
And the lower surface of the upper surface of the metal sheet is flat so as to be in sliding contact with the upper surface of the second fixing member.
A pair of O-rings are formed between the metal sheet and the valve body, and the first disk and the rubber seat ring are inclined downward toward the inner space of the valve body.
And the upper surface of the upper portion is inclined downward toward the inner space of the valve body.
According to the present invention having the above-described structure, double sealing is performed at both sides of the disk, so that the sealing of the fluid can be further strengthened irrespective of the flow direction.
Further, there is an advantage that the pressing amount of the fixing member can be easily adjusted by using the adjustment unit.
1 is a side cross-sectional view of a butterfly valve according to one embodiment of the present invention.
Figure 2 is a schematic front view of the butterfly valve shown in Figure 1;
3 is an enlarged cross-sectional view of an enlarged view of a portion A in Fig.
4 is an enlarged cross-sectional view showing an enlarged view of a portion B in Fig.
5 is an assembled sectional view of a fixing bolt and an adjusting bolt.
Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described in detail below. However, it is to be understood that the present invention is not limited to the disclosed embodiments, but may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. It is intended that the disclosure of the present invention be limited only by the terms of the appended claims.
Hereinafter, a double disc butterfly valve having a reserve chamber related to the present invention will be described in detail with reference to the drawings.
FIG. 1 is a side cross-sectional view of a butterfly valve according to one embodiment of the present invention, and FIG. 2 is a schematic front view of a butterfly valve shown in FIG.
1 and 2, the butterfly valve includes a
The
The
A shaft 130 (see FIG. 2) connected to an opening / closing mechanism (not shown) is fixed to one surface of the pair of
The
The
The
The
A
FIG. 3 is an enlarged cross-sectional view of the portion A of FIG. 1, showing a
According to an embodiment of the present invention, the
The
Referring to FIG. 5, the
The
The
According to an embodiment of the present invention, the
FIG. 4 is an enlarged cross-sectional view of part B of FIG. 1, illustrating a
The
At this time, since the
The
O rings 281, 282 and 280 are provided for sealing between the
Hereinafter, the operation of the second sealing part will be described.
Referring to FIG. 4, the
As the distance D2 between the
As described above, according to the embodiment of the present invention, since the first and second sealing
The double disc type butterfly valve having the above-described spare chamber can be applied to a case where the configuration and method of the above-described embodiments are not limitedly applied, but the embodiments can be applied to all or a part of each embodiment Some of which may be selectively combined.
It will be apparent to those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof.
It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of the present invention is defined by the appended claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be interpreted as being included in the scope of the present invention .
Claims (13)
A first disk and a second disk rotatably installed inside the valve body and opening and closing the flow path of the valve body and facing each other at regular intervals;
A first sealing part installed between the outer circumferential surface of the first disk and the inner circumferential part of the valve body so as to be squeezed when the conduit is closed; And
And a second sealing part provided between the outer circumferential surface of the second disk and the inner circumferential part of the valve body,
Wherein the first sealing portion
A pneumatic pressure providing passage formed inside the valve body to provide a pneumatic pressure; And
The first portion is disposed inside the valve body and connected to the pneumatic pressure providing passage and the second portion includes an annular rubber seat ring protruding outside the valve body and closely contacting the outer circumferential surface of the first disk A double disk butterfly valve having a preliminary chamber made of stainless steel.
Wherein the rubber seat ring includes a seat ring insertion portion protruding from the valve body toward the first disk and a second ring member formed on the outer side of the seat ring insertion portion and interposed between the first fixing member engaged with the seat ring insertion portion, Is inserted in such a manner that it can be moved by a spring.
Wherein the rubber sheet ring comprises:
Wherein a portion contacting the first disk is formed to be inclined downward toward the inside of the valve body.
The seat ring insertion portion
A first fixing bolt passing through a first fixing bolt through hole formed in the first fixing member and inserted and fixed in a first fixing bolt insertion groove formed in the seat ring insertion portion,
Wherein the first fixing bolt is coupled to the first fixing member by a first adjusting bolt passing through the first adjusting bolt through-hole formed in the first fixing member and contacting the surface of the seat ring insertion portion. Butterfly valve.
And an O-ring is formed between the fixing member and the seat ring insertion portion.
Wherein the second disk is formed with protrusions protruding outwardly. ≪ RTI ID = 0.0 > 11. < / RTI >
And the second sealing portion
An annular metal sheet formed between the projection of the second disk and the valve body;
A second fixing member coupled to the metal sheet to adhere the metal sheet to the second disk; And
And a second adjusting unit inserted in the second fixing member to adjust the distance between the metal sheet and the second disk.
The metal sheet is formed in a "C" shape,
An upper portion in contact with the projection;
A lower portion slidingly contacting the surface of the body; And
And a connecting portion connecting the upper portion and the lower portion.
The second adjusting unit is inserted into a second fixing bolt insertion groove formed in the metal sheet and passes through a second fixing bolt through hole formed in the second fixing member, Fixing bolt; And
And a control bolt formed through the second adjustment bolt through-hole formed in the second fixing member and formed in contact with the surface of the metal sheet.
Wherein the upper surface of the metal sheet is in plane contact with the upper surface of the second fixing member so as to be in sliding contact with the upper surface of the second fixing member.
And a pair of O-rings are formed between the metal sheet and the valve body.
Wherein the first disc and the rubber seat ring are inclined downward toward the inner space of the valve body.
Wherein the upper surface of the upper portion is inclined downward toward the inner space of the valve body.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020130167361A KR101567790B1 (en) | 2013-12-30 | 2013-12-30 | Double-disc type butterfly valve having preliminary seal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020130167361A KR101567790B1 (en) | 2013-12-30 | 2013-12-30 | Double-disc type butterfly valve having preliminary seal |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20150078188A true KR20150078188A (en) | 2015-07-08 |
KR101567790B1 KR101567790B1 (en) | 2015-11-11 |
Family
ID=53790781
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020130167361A KR101567790B1 (en) | 2013-12-30 | 2013-12-30 | Double-disc type butterfly valve having preliminary seal |
Country Status (1)
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KR (1) | KR101567790B1 (en) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001336643A (en) * | 2000-05-29 | 2001-12-07 | Nishi Nippon Sekkei Kogyo Kk | Seal device for double water seal butterfly valve and its safety lock device |
KR100687294B1 (en) * | 2004-12-09 | 2007-03-02 | 서광공업 주식회사 | Floating type apparatus preventing water leakage of butterfly valve |
KR101096525B1 (en) * | 2011-04-26 | 2011-12-20 | 서광공업 주식회사 | Butterfly valve having function of maintaining sealing performance under low and high temperature |
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2013
- 2013-12-30 KR KR1020130167361A patent/KR101567790B1/en active IP Right Grant
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KR101567790B1 (en) | 2015-11-11 |
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Payment date: 20181031 Year of fee payment: 6 |