IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0104242
(2011-05-10)
|
등록번호 |
US-8398055
(2013-03-19)
|
우선권정보 |
TW-99146565 A (2010-12-29) |
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
12 |
초록
▼
A ball segment valve for controlling fluid flow in a piping, includes a valve housing with a valve seat disposed therein, a tubular bearing body fitted to an upper axial opening of the valve housing, a rotating spindle inserted through the bearing body into the valve housing, a tightening sleeve uni
A ball segment valve for controlling fluid flow in a piping, includes a valve housing with a valve seat disposed therein, a tubular bearing body fitted to an upper axial opening of the valve housing, a rotating spindle inserted through the bearing body into the valve housing, a tightening sleeve unit sleeved on the spindle to ensure full engagement of the spindle with the bearing body, a journal member inserted through a lower axial opening into the valve housing, and a valve body having upper and lower lugs coaxially fitted to the spindle and the journal member, and a spherical segment having a convex outer spherical surface and rotated with the spindle between a fully closed position, where the spherical surface is in sealing contact with the valve seat, and a fully opened position to permit a full fluid communication of the valve housing.
대표청구항
▼
1. A ball segment valve comprising: a valve housing having two flow openings opposite to each other along a centerline, a flow duct disposed between said flow openings, and upper and lower axial openings disposed opposite to each other along a rotating axis that intersects the centerline, and in com
1. A ball segment valve comprising: a valve housing having two flow openings opposite to each other along a centerline, a flow duct disposed between said flow openings, and upper and lower axial openings disposed opposite to each other along a rotating axis that intersects the centerline, and in communication with said flow duct;an annular valve seat disposed in said valve housing to surround the centerline, and between said flow duct and one of said flow openings to control fluid communication therebetween;a tubular bearing body having a bushing segment which is configured to be fittingly inserted into said upper axial opening, which defines a bushing bore in communication with said flow duct, and which extends axially and toward said flow duct to terminate at a lower bushing end, and a bearing segment axially opposite to said bushing segment;a rotating spindle which has coupling and actuated segments opposite to each other along a spindle axis, and a spindle segment which is disposed between said coupling and actuated segments, and which is configured to be insertable through said bushing bore so as to allow for said coupling segment to extend into said flow duct with the spindle axis oriented in line with the rotating axis;a tightening sleeve unit which is disposed to sleeve on said spindle segment, and which has pressed and pressing sleeve ends opposite to each other axially, said tightening sleeve unit being configured such that when a tightening force is applied to said pressed sleeve end, said pressing sleeve end is forced to urge said lower bushing end toward said coupling segment so as to ensure locating said coupling segment in a fully engaging position;a journal member having a journal portion which is inserted into said flow duct from said lower axial opening and which extends along a journal axis that is oriented in line with the rotating axis;a valve body having upper and lower lugs which are configured to be respectively and coaxially fitted to said coupling segment and said journal portion, and a spherical segment which is interposed between said upper and lower lugs, said spherical segment having a convex outer spherical surface which defines a center of sphere that is located at the intersection of the rotating axis and the centerline, said spherical segment being rotatable with said upper and lower lugs about the rotating axis between a fully closed position, where a spherical apex of said outer spherical surface is located at the centerline, and where said outer spherical surface is in sealing contact with an entire circumference of said valve seat so as to interrupt fluid communication between said flow duct and said flow opening, and a fully opened position, where the spherical apex of said outer spherical surface is at an angle from the centerline to permit full fluid communication between said flow opening and said flow duct; anda spline assembly which is disposed between said upper lug and said coupling segment to axially guide said coupling segment to the fully engaging position where a torque exerted on said actuated segment is transmitted through said spline assembly to rotate said valve body about the rotating axis. 2. The ball segment valve according to claim 1, wherein said bearing segment defines a bearing hole of a larger dimension than said bushing bore to form a shoulder abutment surface therebetween, said rotating spindle further having an annular flange which is disposed between said spindle segment and said coupling segment, and which is configured to be fit in said upper axial opening to confront, and to be rotatable relative to said lower bushing end about the rotating axis so as to ensure the spindle axis of said rotating spindle to be in line with the rotating axis. 3. The ball segment valve according to claim 2, further comprising a first anti-friction bearing disposed in said bearing hole between said pressing sleeve end and said shoulder abutment surface, and a second anti-friction bearing disposed in said upper axial opening between said lower bushing end and said annular flange. 4. The ball segment valve according to claim 1, wherein said spline assembly includes an axially extending key and an axially extending key slot which are respectively disposed on said coupling segment and in said upper lug and which are matingly fitted to each other. 5. The ball segment valve according to claim 1, wherein said outer spherical surface of said spherical segment is configured to form leading and trailing regions which are spaced apart from each other in a transverse direction that is transverse to both the centerline and the rotating axis, said leading region having a tapered contour which includes upper and lower contour segments that respectively extend convergently from said upper and lower lugs and away from the spherical apex, said trailing region having a cutout area defined by upper and lower marginal segments which extend convergently toward the spherical apex. 6. The ball segment valve according to claim 1, wherein said valve housing has an inner housing surface which surrounds the centerline to define said flow openings, said ball segment valve further comprising an annular seal member disposed in said one of said flow openings and having an annular surface which confronts said flow duct to serve as said annular valve seat, and an annular adaptor member which has annular abutment end that is abuttingly engageable with said annular seal member, and an externally threaded segment that is threadedly engaged with said inner housing surface so as to bring said annular abutment end into abutting engagement with said annular seal member by virtue of a screw-in action. 7. The ball segment valve according to claim 6, wherein said valve housing has an annular barrier which is disposed on said inner housing surface, and which is configured to counteract said annular seal member against the screw-inaction of said externally threaded segment. 8. The ball segment valve according to claim 7, wherein said journal member further includes a cover portion configured to be detachably secured to said valve housing so as to cover said lower axial opening once said journal portion is inserted into said flow duct through said lower axial opening. 9. The ball segment valve according to claim 1, further comprising an adjusting lever coupled to said actuated segment so as to apply the torque thereto.
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