Butterfly valve having function of maintaining sealing performance under low and high temperatures
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F16K-025/00
F16K-001/22
F16K-001/42
F16K-001/226
출원번호
US-0277311
(2011-10-20)
등록번호
US-8857793
(2014-10-14)
우선권정보
KR-10-2011-0038743 (2011-04-26)
발명자
/ 주소
Kim, Man Young
출원인 / 주소
Seokwang Mfg. Co., Ltd.
대리인 / 주소
Ostrolenk Faber LLP
인용정보
피인용 횟수 :
0인용 특허 :
8
초록▼
Disclosed is a butterfly valve capable of controlling a flow of a fluid according to a rotation of a disk. The butterfly valve includes a body provided with an inner space having two open ends; a disk unit having a disk rotatably installed at the inner space, and configured to selectively open and c
Disclosed is a butterfly valve capable of controlling a flow of a fluid according to a rotation of a disk. The butterfly valve includes a body provided with an inner space having two open ends; a disk unit having a disk rotatably installed at the inner space, and configured to selectively open and close the inner space according to a rotation of the disk; a first seat portion protruding from an outer circumferential surface of the disk; a second seat portion protruding from an inner circumferential surface of the body, and arranged to face the first seat portion; and a sealing unit mounted to the body, and formed to contact the first and second seat portions such that a gap between the outer circumferential surface of the disk and the inner circumferential surface of the body is sealed. Under this configuration, the butterfly valve may have an enhanced reliability under low and high temperatures and a high pressure.
대표청구항▼
1. A butterfly valve, comprising: a body defining an inner space having two open ends and an inner circumferential surface;a disk unit having a disk rotatably installed at the inner space, and configured to selectively open and close the inner space according to a rotation of the disk, said disk hav
1. A butterfly valve, comprising: a body defining an inner space having two open ends and an inner circumferential surface;a disk unit having a disk rotatably installed at the inner space, and configured to selectively open and close the inner space according to a rotation of the disk, said disk having an outer circumferential surface facing said inner circumferential surface;a first seat portion protruding from a portion of the outer circumferential surface of the disk;a second seat portion protruding from the inner circumferential surface of the body, and arranged to radially face the first seat portion; anda sealing unit mounted to the body, and formed to contact the first and second seat portions such that a gap between the outer circumferential surface of the disk and the inner circumferential surface of the body is sealed,wherein the sealing unit comprises:a first contact portion inclined with respect to a central line of the body, located at one side of the sealing unit, and contacting the first seat portion; anda second contact portion inclined with respect to the central line of the body in a direction opposite to the first contact portion, located at an opposite side of the sealing unit, and contacting the second seat portion. 2. The butterfly valve of claim 1, wherein the sealing unit is provided with a sealing body portion formed in a ring shape, wherein the first contact portion is extending from the sealing body portion in the form of a cantilever, and the second contact portion is formed on an outer circumferential surface of the sealing body portion. 3. The butterfly valve of claim 1, wherein the first and second contact portions are formed to be inclined toward a direction to press the first and second seat portions by a pressure of a fluid which flows along the inner space. 4. The butterfly valve of claim 1, further comprising a control unit configured to control a position of the sealing unit such that the sealing unit controls pressed degrees of the first and second seat portions, wherein the control unit comprises:a fixing portion mounted to the body; anda control screw coupled to the sealing unit through the fixing portion so as to control the pressed degrees. 5. The butterfly valve of claim 4, wherein the body is provided with a vertical surface perpendicular to an inner circumferential surface of the body, and a horizontal surface having an insertion groove and extending from the vertical surface, wherein the fixing portion is mounted to the vertical surface and the horizontal surface, and a part of a ring holder is inserted into the insertion groove such that the fixing portion is fixed. 6. The butterfly valve of claim 1, wherein the first and second seat portions comprise first and second metal seats formed of metallic materials, respectively. 7. The butterfly valve of claim 6, wherein the first and second metal seats are formed such that contact points thereof with the first and second contact portions are arranged at positions corresponding to each other in a radius direction of the body. 8. The butterfly valve of claim 6, wherein the first and second metal seats are fixed to the disk and the body, respectively, in a welding manner.
Garrigues Jean-Claude (Cadaujac FRX) Ren Laulh (Villenave d\Ornon FRX) Rieuvernet Pierre (Merignac FRX), Sealing liner with incorporated reaction ring, more particularly for a closure means.
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