摘要:
A rotary joint having a stationary section (60) having a fluid path (6) in which sealed fluid flows; a sleeve (30) having in it a second connection fluid path (6C) in which the fluid from the fluid path flows, rotatable relative to the stationary section, and made of a rustless material; a rotary seal ring (2) having a first connection fluid path (6B) that has an inner peripheral surface fitting on the outer peripheral surface of the sleeve so as to be connectable to the second connection fluid path, having a first seal surface (2A) on one side face of the rotary seal ring (2), and having a second seal surface (2B) on the other side face of the rotary seal ring (2) ; a first stationary seal ring (10) having a first relative seal surface (10S) in intimate contact with the first seal surface; and a second stationary seal ring (11) having a second relative seal surface (11S) in intimate contact with the second seal surface and enabling the fluid path and the first connection fluid path to be connection to a space between the first stationary seal ring (10) and the second stationary seal ring (11).
摘要:
A mechanical seal devica has a stationary seal ring having a seal surface;a rotating seal ring having a facing seal section capable of being in intimate contact with the seal surface while facing it; a fixation section for sealingly holding the rotating seal ring and sealingly held by a rotating shaft; a seal part placed more on the machine exterior side than a mechanical seal and sealing between a seal cover and the rotating shaft; and a fluid chamber for containing lubrication liquid and formed between an intimate-contact surface, which is between the seal surface and the facing seal surface,and the seal part. The fluid chamber side of the seal surface or of the facing seal surface is formed in a lubrication region surface and the machine interior side is formed in a self-lubrication region surface. The mechanical seal device further has, in the lubrication region surface, an introduction opening for introducing the lubrication liquid, and an annular bloking groove formed in the self-lubrication region and blocking the lubrication liquid from the lubrication region surface.
摘要:
Described herein is a ceramic sliding element for seals mainly comprised of 25 to 75 weight % carbon aggregate and 20 to 50 weight % thermosetting synthetic resin binder. The sliding element has been fired at 1200°C. The element has spherical pores whose diameter is in the range of from 1 to 100 µ m. The pores are isolatedly scattered in the element. The sliding element for seals is excellent both in solid and fluid lubrication properties.
摘要:
A seal device where, even if a fluid to be sealed is under high pressure, a seal surface of a seal ring is prevented from producing heat and the seal surface is prevented from wearing. The seal device has a first seal ring (5) having a first seal surface (5A)at an end surface and having, on the opposite side of the first seal surface (5A), a first pressing surface (5B) formed on an inclined surface: a first seal retainer (51) having a first inner periphery fixation surface (51A) facing the first pressing surface (5B); a first elastic seal ring (2) for pressing the first pressing surface (5B) in an axial direction by elastic force produced by sealed compression between the first pressing surface (5B) and the first inner periphery fixation surface (51A);a second seal ring (15) in tight contact with the first seal surface (5A) of the first seal ring (5) and having a second seal surface (15A) slidable relative to the first seal surface (5A); and a second seal retainer (61) in which the second seal ring (15) is sealedly held. The first pressing surface (5B) is formed as an inclined surface where the ratio H/L is in the range not exceeding 0.5, with H being the width in a radial direction, L the length in the axial direction of the first pressing surface (5B).
摘要:
A case main body and an upper plate are reliably fitted together, a seal is formed between the fitting surfaces, and a magnetic circuit is prevented from malfunctioning. A solenoid-controlled valve, which connects a solenoid section (2) and a valve section (30), comprises a cylindrical case main body (3) having a solenoid coil (4) housed therein and having a connecting section (3A) at one end, an upper plate (6) having a locking surface (6B) adapted to be fitted to the connecting section (3A), and a connector (5) integrally provided with the upper plate (6). A seal section (20) is joined to an outer surface between the fitting surfaces of the connecting section (3A) and the upper plate (6).