Abstract: Provided is a sliding component capable of exhibiting stable sliding performance under various conditions. The sliding component includes a first ring and a second ring which are provided with facing surfaces facing each other and relatively rotated upon a drive of a rotating machine. At least the first ring is provided with a curved surface portion formed in a convex shape and forming at least a part of the facing surface of the first ring.

Abstract: A capacity control valve includes a valve housing provided with a discharge port, suction ports, a control port allowing a control fluid of a control pressure Pc to pass therethrough and a primary valve including a primary valve seat and a primary valve body driven by a solenoid and opening and closing a communication between the discharge port and the control port by the movement of the primary valve body. The capacity control valve further includes a CS valve which includes a CS valve body, a first spring urging the CS valve body in a closing direction, and a second spring urging the CS valve body in an opening direction, the control port and the suction port being opened at a valve closed position of the primary valve body, the control port and the suction port being closed at a valve opened position of the primary valve body.

Abstract: A sliding component includes a pair of the sliding members being slidable relative to each other on sliding surfaces of the sliding members. One of the sliding surfaces includes a dimple group in which a plurality of dimples is arranged and each of the dimples has an opening portion whose shape has a long axis and a short axis orthogonal to the long axis. The dimple group includes a clockwise dimple group in which the dimples are arranged in a clockwise direction from an inner diameter side to an outer diameter side of the sliding surface and a counterclockwise dimple group in which the dimples are arranged in a counterclockwise direction from the inner diameter side to the outer diameter side of the one of the sliding surfaces.

Abstract: A sliding component includes a pair of sliding members being slidable relative to each other on sliding surfaces of the sliding members. In the sliding component, one of the sliding surfaces includes a dimple group in which a plurality of dimples is arranged. Each of the dimple has an opening portion whose shape has a long axis and a short axis orthogonal to the long axis. In the dimple group, the dimples are arranged along a curve having a curvature different from a curvature of a circumference of the one of the sliding surfaces.

Abstract: A capacity control valve includes a valve housing provided with a suction port through which a suction fluid of suction pressure passes, and a control port through which a control fluid of control pressure passes, a valve element configured to be driven by a solenoid, a spring that biases the valve element in the direction opposite to the driving direction by the solenoid, and a CS valve formed by a CS valve seat and the valve element and configured for opening and closing a communication between the control port and the suction port by movement of the valve element. The capacity control valve further includes a pressure receiving portion to which force in accordance with discharge pressure is applied in the axial direction of the valve element.

Abstract: The Disclosed is a solenoid valve, in which a rod is moved by a plunger that comes into contact with and separates from a stator by electromagnetic force, causing a valve body that opens and closes a valve to move reciprocally. The valve is configured such that a first space and a second space are formed at respective sides of the plunger in the movement direction thereof, a through-hole is formed in the plunger so as to be concentric with a center axis, the rod is arranged in the first space, and a communication passage is formed between an inner surface of the plunger and an outer surface of the rod and communicates with the first space S1 and the second space.

Abstract: A sliding component includes: a dynamic pressure generation groove provided in a sliding surface of the sliding component, the dynamic pressure generation groove having a first end forming a closed end and a second end forming an inlet communicating with any one side of a sealed fluid side and a leakage side in a radial direction; and a deep groove provided in the sliding surface and deeper than the dynamic pressure generation groove, an inlet 16a of the deep groove communicating with an inlet of the dynamic pressure generation groove on a side of a side wall of the dynamic pressure generation groove, the side wall being circumferentially opposite to a dynamic pressure generation wall constituting another side wall of the dynamic pressure generation groove.

Abstract: Provided is a sliding component capable of stably reducing the frictional resistance between sliding surfaces entailing eccentric rotation. A sliding component has a sliding surface sliding relatively to a facing sliding surface with eccentric rotation. The sliding surface is provided with a plurality of dynamic pressure generation grooves arranged in a circumferential direction and each having, in a plan view, a tapered portion configured to become narrower toward a downstream side in an eccentric rotation direction of the facing sliding surface relatively to the sliding surface.

Abstract: A capacity control valve includes a valve housing provided a discharge port through which a discharge fluid of discharge pressure Pd passes, a suction port through which a suction fluid of suction pressure Ps passes, and a control port through which a control fluid of control pressure Pc passes, a rod configured to be driven by a solenoid, a main valve formed by a main valve seat and a main valve element and configured for opening and closing a communication between the discharge port and the control port in accordance with a movement of the rod, and a CS valve provided between the control port and the suction port and controlled by a dynamic pressure of a fluid flowing from the discharge port to the control port at an opening state of the main valve.

Abstract: A spool valve includes a sleeve and a spool arranged on an inside of a sleeve to be movable in a longitudinal direction, the sleeve being provided with an inflow port into which fluid is supplied from an external fluid supply hole, and an outflow port through which the fluid is flown to an outside of the sleeve, wherein a supply groove is formed on an outer periphery of the sleeve, and the supply groove includes an inlet space into which the fluid flows from the fluid supply hole and an outlet space formed on a side of the inflow port with respect to the inlet space in an axial direction.

Abstract: Provided is a sliding component capable of reducing the frictional resistance of a sliding surface entailing eccentric rotation. A sliding component is formed in an annular shape and has a sliding surface relatively sliding with eccentric rotation. A plurality of grooves not communicating with spaces on the inner and outer diameter sides of the sliding component are circumferentially provided in the sliding surface.

Abstract: A sliding component has an annular shape with a fluid facing inside and outside of the sliding component and has a sliding surface relatively sliding with eccentric rotation, in which the sliding surface includes a land and a plurality of dynamic pressure generation mechanisms arranged in a circumferential direction, the dynamic pressure generation mechanism includes a shallow groove portion and a deep groove portion, the shallow groove portion communicates with the deep groove portion, and a communication passage providing a communication between the deep groove portion and either an inside space or an outside space of the sliding component is formed in the sliding component.

Abstract: Provided are a sliding member for sealing and a seal device that exhibit good sealing performance even when used in an environment where silicon oxide is likely to be deposited; the sliding member for sealing includes a sintered body consisting of 1.0 to 12.5 wt.% of cerium oxide, a combination of 20 to 50 wt.% of graphite and graphitizable carbon, and a remainder of non-graphitizable carbon; and, the sliding member for sealing is used as, for example, a rotary seal ring or a stationary seal ring.

Abstract: A butterfly valve that is capable of reducing torque and improves sealing performance. The butterfly valve 10 includes a shaft member 100, a tabular valve body that is provided on the shaft member 100, a case 310 that is attachable to and detachable from a through-hole 510 formed in an attachment member 500 to which the butterfly valve 10 is configured to be attached, a pair of bearings 320 that is provided in the case 310 and rotatably supports the shaft member 100, and a magnetic fluid seal that is provided between the pair of bearings 320 in the case 310 and seals an annular gap between the case 310 and the shaft member 100.

Abstract: A mechanical seal capable of eliminating the need for an elastic body includes a metallic sleeve 120 fixed to a rotary shaft 500 and a metallic rotary ring 110 fixed to the sleeve 120. A metallic cartridge 220 is fixed to a housing 600. A metallic fixed ring 210 is configured to slide on an end surface of the rotary ring 110. A metallic bellows 230 presses the fixed ring 210 toward the rotary ring 110, wherein the rotary ring 110 and the sleeve 120 are connected to each other by an annular first connecting part, whereby a radially inner side region and a radially outer side region are separated from each other, one end of the bellows 230 and the fixed ring 210 are connected to each other by an annular second connecting part.

Abstract: A mechanical seal which can provide stable sealing performance over a long period of time. A rotating ring unit 100 includes an annular elastic seal 130 having a first annular part 131 to which a rotating ring 110 is fitted and thus fixed on an inner circumferential surface side thereof, a second annular part 133 provided in close contact with an outer circumferential surface of a rotating shaft, and a curved part 132 which connects the first and second annular parts 131 and 133 and follows a positional change of the second annular part 133 with respect to the first annular part 131, an annular tightening member 140 which tightens an outer circumferential surface of the second annular part 133 on the rotating shaft, and a metal case 120 including an annular fitting part 121 to which the first annular part 131 is fitted and thus fixed on the inner circumferential surface side thereof.

Abstract: In an exemplary embodiment, a pair of sliding components has sliding surfaces that slide with respect to each other, wherein at least one of the sliding surfaces, sliding surface S, includes a random dimple group 11 in which plural dimples 10 are randomly arranged, and the random dimple group 11 is arranged to be biased in the circumferential direction of the sliding surface S. The sliding components have an improved lubricating property and reliability of a sealing property.

Abstract: In a pair of sliding components having respective sliding faces (S) which slide relative to each other, at least one of the sliding faces (S) is provided with a plurality of dimples (10), and the dimples (10) include a concave part (15), and a peripheral edge part (11) which is located at the outer peripheral part of the concave part (15) and is shallower than the concave part (15). Accordingly, the performance of the plurality of dimples formed on the sliding face can be sufficiently exploited, thereby improving their lubrication performance and sealing performance.

Abstract: The purpose of the present invention is to provide a mechanical seal in which a stationary-side sealing ring can follow the movement of a rotating-side sealing ring to provide reliable sealing properties and by which the entire device can be made compact. A mechanical seal in which a rotating-side sealing ring 13 attached to a shaft 2 and a stationary-side sealing ring 21 attached to a housing 3 slide relative to each other and seal between the housing 3 and the shaft 2 includes a case 22 which is attached to the housing 3 and which contains the stationary-side sealing ring 21, and a seal member 23 which is disposed between the case 22 and the stationary-side sealing ring 21, and the case 22 includes a holding part 22d which regulates the seal member 23 from moving to both sides in the axial direction thereof.

Abstract: A mechanical seal in which a rotary ring can be more reliably positioned. A rotary ring unit 100 includes: a sleeve 120 fixed to a rotary shaft 500; and a rotary ring 110 of which a movement in an axial direction and a rotation with respect to the sleeve 120 is restricted, a fixed ring unit 200 includes: a fixed ring 210 configured to slide on an end surface of the rotary ring 110; and a bellows 250 which presses the fixed ring 210 toward the rotary ring 110, and the sleeve 120 is provided with a stopper 140 which restricts a movement of the rotary ring 110 toward the fixed ring 210.