公开(公告)号：US5501471A

公开(公告)日：1996-03-26

申请号：US247120

申请日：1994-05-20

申请人： Kanji Ohba ,  Takeo Nakajima ,  Yuichi Tamura

发明人： Kanji Ohba ,  Takeo Nakajima ,  Yuichi Tamura

IPC分类号： F16J15/34

CPC分类号： F16J15/3464 ,  Y10S277/91

摘要： The present invention relates to a mechanical seal for a shaft, having a rotary seal ring and a stationary seal ring which slide on and come in contact with each other for sealing a fluid. A blade-like sealing end portion formed at one seal ring is resiliently pressed, through a coil spring or a flat leaf spring, to a flat sealing end surface formed at the other seal ring. The blade-like sealing end portion is symmetrical at the inner and outer peripheral surfaces thereof with respect to the edge surface thereof, and the angles formed by the inner and outer peripheral surfaces of the sealing end portion with respect to the edge surface thereof are set to 90.degree. or more, and preferably in the range from 105.degree. to 150.degree.. This facilitates the machining of the sealing end portion and prevents the sealing end portion from being broken, thus assuring a stable sealing performance for a long period of time. Further, the spring surface pressure is increased to assure an excellent sealing performance even though the pressure greatly varies.

摘要翻译： 本发明涉及一种用于轴的机械密封件，其具有旋转密封环和彼此滑动并相互接触以密封流体的固定密封环。 形成在一个密封环处的叶片状密封端部通过螺旋弹簧或平板弹簧弹性地压制到形成在另一密封环上的平坦的密封端面。 叶片状密封端部在其内周面和外周面相对于其边缘面对称，并且由密封端部的内周面和外周面相对于其边缘面形成的角度被设定 至90°以上，优选为105°〜150°。 这有利于密封端部的加工，并且防止密封端部被破坏，从而长期保证稳定的密封性能。 此外，即使压力大大变化，弹簧表面压力也增加以确保优异的密封性能。

公开(公告)号：US4335888A

公开(公告)日：1982-06-22

申请号：US175880

申请日：1980-08-07

申请人： Kanji Ohba ,  Shigenari Itoi

发明人： Kanji Ohba ,  Shigenari Itoi

IPC分类号： F16J15/34

CPC分类号： F16J15/3468 ,  F16J15/3496 ,  Y10S277/93

摘要： A mechanical seal wherein a smooth sealing end surface is formed at one end of a rotation seal ring and a stationary seal ring, while a sharp edge-like sealing end portion in slidable contact with the smooth sealing end surface is formed at the other of seal rings, the sealing end portion having a width of 0.1 to 0.3 mm, and the spring face pressure to be imparted to that portion of sealing end portion which slidably contacts with the sealing end surface is set to a relatively high value from 30 to 50 kg/cm.sup.2. Materials of which the sealing end surface and the sealing end portion are made are selected from hard ceramics.

摘要翻译： 一种机械密封，其中在旋转密封环的一端形成光滑的密封端面和固定的密封环，而在密封的另一个处形成与光滑的密封端面可滑动接触的尖锐的边缘状密封端部 密封端部的宽度为0.1〜0.3mm，并且赋予与密封端面可滑动接触的密封端部的部分的弹簧面压力为30〜50kg的较高值 / cm2。 密封端面和密封端部的材料选自硬质陶瓷。