| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 141 | AUTOMATIC BALANCING BALL VALVE | US14386944 | 2013-03-14 | US20150053879A1 | 2015-02-26 | Giulio Pettinaroli; Liborio Spagnolo |
| An automatic balancing valve is described provided with a valve body having at least one inlet channel and an outlet channel for a heat transfer fluid, wherein the flow regulation is carried out by a ball shutter having an axial through channel with axis perpendicular to the rotation axis of the ball. The ball valve has at least one radial channel aligned with the rotation axis of the ball and is connected to the axial through channel. The radial channel has an outlet port having a circular cross-section which hydraulically connects the axial through channel of the ball with the outlet channel of the valve. | ||||||
| 142 | NON-RETURN VALVE HAVING IMPROVED AUTOMATIC RECIRCULATION | US12830015 | 2010-07-02 | US20110000556A1 | 2011-01-06 | RAINER KLEMM |
| An automatic recirculation non-return valve comprises a check valve located in a main duct and a recirculation valve located in a recirculation duct. The check valve is movable between extreme positions of closing and opening the flow cross-section of the main duct. The recirculation duct forms a branch of the main duct upstream of the check valve. The check valve comprises a rotary shutter and a seat cooperating with each other to define a flow cross-section of the recirculation duct. A transmission mechanism couples the movement of the check valve and that of the shutter. The recirculation valve comprises a pressure-balancing mechanism configured in such a manner that, of the downstream surfaces of the shutter, at least one surface is not involved in sealing and is subjected to a pressure substantially equal to the pressure exerted on the upstream surfaces of the shutter. | ||||||
| 143 | High and low pressure gas selector valve of refrigerator | US10415350 | 2003-05-05 | US20040040315A1 | 2004-03-04 | Tomohiro Koyama; Alphons De Waele |
| There are provided a housing that has a generally cylindrical-shaped internal circumferential surface, a housing passage that includes a high-pressure gas passage and a low-pressure gas passage which are formed on the housing surface, a generally cylindrical-shaped rotor that is supported by bearings, and which rotates with a micro-clearance away from the internal circumferential surface of the housing without touching the housing, and a rotor passage that is formed inside the rotor, and through which gas flows at the time its openings align with the valve housing passage. Load to the rotating axis of the rotor due to the pressure of the supplied gas to the valve is cancelled, and the clearance between the rotor and the housing are maintained at a proper level, by installing pluralities of high-pressure gas supply ports and low-pressure gas supply ports of the housing in symmetrical positions relative to the rotating axis of the rotor. | ||||||
| 144 | Apparatus for opening/closing a valve and method thereof | US09492537 | 2000-01-27 | US06340029B1 | 2002-01-22 | Duk-Jo Jun |
| A method and an apparatus for opening/closing a valve are provided. The method includes the steps of varying a position of a seat assembled into an inner side of a fluid passage of a valve body using a pneumatic pressure or a magnetic force so as to be separated from a turning radius of a valve member for opening/closing the fluid passage, rotating the valve member in a forward or reverse direction by an actuator, rotating the valve member in the forward direction and opening the fluid passage, rotating the valve member in the reverse direction, and returning the position of the seat so that an inner side of the seat is sealingly contacted with an outer face of the valve member and closing the fluid passage. | ||||||
| 145 | External unified integral bleed system for valves | US695677 | 1996-07-22 | US5931192A | 1999-08-03 | Gordon M. Smith; Kevin W. Lilie |
| A unified block integral bleed system for use with valves such as plug-type valves wherein pressure release flow occurs through a manifold port mounting arrangement which accesses upstream, downstream and body cavity portions of the valve and provides atmosphere taps as well without external piping. Such a manifold integral body bleed system provides internal flow channels and is preferrably configured as a separate external unit which can be retrofitted to existing valve installations in the field. The manifold bleed system may be attached to the valve, such as by welding, or may be located at a position remote from the valve. | ||||||
| 146 | Automatic back water valve system | US823809 | 1997-03-24 | US5875813A | 1999-03-02 | William H. Cook |
| A valve body is formed in two half sections which are secured together to define a drain line passage and to confine therebetween a thin gate valve blade for movement between a lower open position and an upper closed position. An actuator includes a flexible bellows sealed to the valve body above the passage and a top plate connected by a rod to the valve blade. The valve body and the bellows define an expandable fluid chamber connected by a bottom port or line to the drain line. The valve body is installed within a sewage drain line extending under a floor. In the event sewage water backs up within the drain line, air within the fluid chamber is compressed to expand the bellows upwardly for closing the valve. When the sewage water flows from the drain line, the air pressure reduces, and the bellows collapses downwardly due to the weight of the top plate and automatically returns the valve blade downwardly to its open position. | ||||||
| 147 | Tapered plug valve | US750036 | 1996-11-27 | US5779222A | 1998-07-14 | Keith Jeffrey Hollingworth; Peter Richard Jones |
| A tapered plug valve having a plug provided with a separate drive shaft and formed with a channel not connected to the plug but connecting the ends thereof to enable pressure equalization. The channel may be formed by being directly drilled through the plug, or comprise a tube, secured in position by welding in a groove cast in the outer surface of the plug. A non return valve is positioned in the channel to limit pressure equalization from the wider end to the smaller end of the plug. | ||||||
| 148 | Shut-off device | US634474 | 1996-04-18 | US5685338A | 1997-11-11 | Werner Trunk |
| A shut-off device, such as a valve or a cock, for pipelines and comprising a casing provided with a flow passageway. The casing is provided with an inlet and an outlet and at least one shut-off member provided with a cavity, the member being movable between a position in which the flow passageway is open and a position in which the flow passageway is closed. An auxiliary chamber is arranged in the casing and communicates with the cavity of the shut-off member. The auxiliary chamber is defined by a separate, almost non-resilient wall portion abutting an abutment face on the wall of the casing. A pressure-relieving passageway formed in the wall of the casing is arranged between an abutment face at the auxiliary chamber and the inlet or outlet of the shut-off device. As a result, a shut-off device having more simple structure than known shut-off devices is obtained. | ||||||
| 149 | Steel ball valve | US810356 | 1991-12-18 | US5169123A | 1992-12-08 | Roger Martin; Laurent Buffa |
| A valve, with a ball having a shaft (5), comprises, at least on the "upstream" side, a seat (14) that can move in the direction in which the fluid flows (F). Seat (14) is connected to body (1) of the valve by an annular membrane (21), constituting a wall of an annular chamber (22) relatively isolated from the "upstream" conditions for example, by a calibrated hole (23). Equilibration means (26) are provided, with a channel (28) and a conduit (29) connecting annular chamber (22) to central volume (27) of the valve, a communication being formed when the valve is opened, thus moving seat (14) away from ball (5). Said communication can be caused to form by control rod (10) of ball (5) when the valve is adjusted for opening. | ||||||
| 150 | Ball valve | US609189 | 1990-11-02 | US5052657A | 1991-10-01 | Thomas E. Winship |
| A kelly valve includes a ball valve structure (10) having a ball valve member (40) with a central bore (42) therethrough mounted within a valve chamber (38) for rotation between open and closed positions. A fluid pressure equalizing opening or port (60) is provided in the quadrant of the ball valve member (40) exposed to the upstream flow passage (20) in closed position (FIG. 2) and exposed to the valve chamber (38) in open position (FIG. 1) thereby making the ball valve member (40) easy to rotate manually even at high downstream fluid pressures. | ||||||
| 151 | Valve spool with cross drill ports | US679212 | 1984-12-07 | US4658859A | 1987-04-21 | Bengt S. Backe; LaMoyne W. Durham |
| A four-way valve is provided, for selectively interconnecting pressure supply and return lines with control pressure lines of a hydraulic device, having means for independently balancing the valve against pressures exerted on the valve by any one or more of the pressure lines and at any operating position of the valve. These pressures exerted on the valve would otherwise restrict or prevent actuation of that valve. This balancing means exposes a minimum surface area of the valve to high pressure forces and isolates the fluid pressure in the pressure lines until interconnection is made by valve actuation. | ||||||
| 152 | Rotary cock with generally spherical valve member | US735916 | 1985-05-20 | US4575045A | 1986-03-11 | Roger Martin; Laurent Buffa |
| A ball valve has a movable upstream valve seat with a metal lip engageable with the valve ball under pressure generated by a bellows section or metal membrane connected between the movable valve seat and the housing. The force of fluid pressure against this moveable valve seat is relieved by operation of a bypass valve connecting opposite sides of this seat. The ball can also have a deformable metal lip. | ||||||
| 153 | Pressure balanced ball valve | US550485 | 1983-11-09 | US4566672A | 1986-01-28 | James F. Giebeler |
| A pressure balanced ball valve assembly includes a ball valve mounted within a unitary cage which has limited axial movement within a stationary tubular body. Annular pistons are slidably mounted within the cage for movement toward and away from the outer surface of the ball valve. Pressure transfer balance conduits extend from locations on one side of the ball valve to annular chambers at opposite ends of the cage. The effective area on the ball valve subjected to upstream pressure is balanced by the effective area of an annular chamber in which the same unit pressure acts on the downstream end of the cage. The balance conduits each lead from one side of the ball valve to a remote chamber at the other end of the cage. | ||||||
| 154 | Ball valve | US621956 | 1975-10-14 | US4076211A | 1978-02-28 | Joseph L. Krechel; Michael J. Purvis |
| A ball valve having a valve body, a main flow passage therethrough, a lateral bore extending generally perpendicularly through the passage, and a unitary ball valve member received in the lateral bore. The ball valve member has a spherical ball portion with an aperture therethrough and a pair of circular sealing heads, one on each side of the ball portion. Each of the sealing heads carries a seal which is slidably and sealingly engageable with the walls of the lateral bore. The sealing heads are of substantially equal diameter so that pressure forces acting on the ball valve member which tend to move the latter axially within the bore are balanced. A seal body is insertable into a main flow passage of the valve body from one end thereof for sealingly engaging the ball portion after the ball valve member has been installed in the lateral bore. | ||||||
| 155 | Balanced plug valve | US625593 | 1975-10-24 | US4034776A | 1977-07-12 | Siavash Eshghy |
| A valve comprising a casing having a passageway therethrough for flow of fluid and a tapered bore intersecting the passageway, a tapered plug rotatably mounted in the tapered bore adapted to block the passageway in valve closed position of the plug and the plug having a port adapted to connect and be in communication with the passageway in valve open position, the plug and casing providing chambers at opposite ends of the tapered plug, means for connecting the chambers to the port to dynamically balance the plug within the casing when the plug is partially or fully open, a biasing means is provided in the casing to axially bias the tapered plug in the direction of the larger end of the plug. | ||||||
| 156 | Rotary valve with fluid pressure sealing closure member | US50538465 | 1965-10-27 | US3408037A | 1968-10-29 | FRIEDRICH KAISER; HELMUT PIRCHL; ALBERT SURBER |
| 157 | Plug valves | US52469766 | 1966-02-03 | US3383088A | 1968-05-14 | DUFFEY DONN W |
| 158 | Orifice valve assembly | US20155362 | 1962-06-11 | US3209779A | 1965-10-05 | MCGOWEN JR HAROLD E |
| 159 | Ball valve | US74977058 | 1958-07-21 | US3023783A | 1962-03-06 | HERBERT VICKERY EDGAR |
| 160 | Poppet controlled gate valve | US57585556 | 1956-04-03 | US2879800A | 1959-03-31 | KOMROSKY STANLEY C |
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