公开(公告)号：US4423879A

公开(公告)日：1984-01-03

申请号：US366811

申请日：1982-04-08

申请人： Akira Takenaka ,  Tatsuhiko Fukuoka

发明人： Akira Takenaka ,  Tatsuhiko Fukuoka

IPC分类号： F16J15/34

CPC分类号： F16J15/3412

摘要： A mechanical seal for preventing the leakage of fluid through the rotary sliding contact surfaces, in which a contact surface is provided with a plurality of fine one-way grooves having outer closed end portions. The fine grooves which are inclined outwardly and rearwardly to the relative rotation can be formed in the sliding contact surface of either the rotating member or the stationary member. If the fine grooves are formed radially or inclined outwardly and forwardly, the fine grooves may be formed in the sliding contact surface of the rotating member. The mechanical seal having such fine grooves in the sliding contact surface gives a quite good sealing effect because, during the rotation of rotating members, the leakage flow of the pressurized fluid or a mixture of liquid and gas that is sealed is on the outside thereof toward the external gas existing on the inside thereof, can be avoided. In another embodiment of the above mechanical seal having the fine grooves, the peripheral portion of at least one sliding contact surface is somewhat raised in the direction of the axis of the rotary shaft so as to increase the contact pressure between the contact surfaces, thereby enhancing the sealing effect during the stoppage of the rotating members. Therefore, the sealing effect in all the use conditions can be much improved.

摘要翻译： 一种用于防止流体通过旋转滑动接触表面泄漏的机械密封件，其中接触表面设置有多个具有外封闭端部的精细单向槽。 可以在旋转构件或静止构件的滑动接触表面中形成向相对旋转的向外和向后倾斜的细槽。 如果微细凹槽径向地形成或向外和向前倾斜，则可以在旋转构件的滑动接触表面中形成微细凹槽。 在滑动接触面中具有这种细槽的机械密封件具有相当好的密封效果，因为在旋转构件旋转期间，加压流体或密封的液体和气体的混合物的泄漏流向外侧 可以避免存在于其内部的外部气体。 在具有细槽的上述机械密封件的另一实施例中，至少一个滑动接触表面的周边部分在旋转轴的轴线方向上稍微升高，以增加接触表面之间的接触压力，从而增强 在旋转构件的停止期间的密封效果。 因此，在所有使用条件下的密封效果可以大大提高。

公开(公告)号：US4415168A

公开(公告)日：1983-11-15

申请号：US366809

申请日：1982-04-08

申请人： Akira Takenaka ,  Tatsuhiko Fukuoka

发明人： Akira Takenaka ,  Tatsuhiko Fukuoka

IPC分类号： F16J15/34

CPC分类号： F16J15/3412

摘要： A mechanical seal comprises a seating ring and a follower ring. The seating ring receives therethrough a rotatable shaft and forms a stationary member and the follower ring is rotated together with the rotatable shaft in sliding contact with the seating ring. The seal is serviceable for avoiding the leakage of pressurized sealed fluid from the outside of the sliding contact portion between both the rings to the inside thereof. At least one of the sliding contact surfaces of both the rings has an outside raised portion along the periphery of the sliding contact surface. The raised portion is swollen in the direction of the axis of the rotatable shaft as compared with the inside portion of the sliding contact surface. Since the contact surface pressure in the peripheral portion of both the rings becomes high at the normal temperature by the provision of the outside raised form, the sealing effect can be improved especially during the stoppage of the follower ring. When the follower ring is subjected to the frictional heat due to its rotation, the follower ring is deformed in the direction in which the contact surface pressure becomes even. Therefore, the effect of sealing during the rotation is also improved. ,,pThis is a continuation, of application Ser. No. 133,713 filed Mar. 25, 1980, in turn a continuation-in-part of application Ser. No. 895,072, filed Apr. 10, 1978 both of which are now abandoned.

摘要翻译： 机械密封件包括座环和从动环。 座环通过可转动的轴接收并形成固定构件，并且随动环与可旋转轴一起旋转，与座环滑动接触。 密封件可用于避免加压密封流体从两个环之间的滑动接触部分的外部泄漏到其内部。 两个环的至少一个滑动接触表面具有沿着滑动接触表面的周边的外部凸起部分。 与滑动接触表面的内部相比，凸起部分在旋转轴的轴线方向上膨胀。 由于通过设置外部凸起形状，两个环的周边部分的接触表面压力在常温下变高，所以特别是在从动环停止期间可以提高密封效果。 当从动环由于其旋转而受到摩擦热时，从动环在接触表面压力变得均匀的方向上变形。 因此，旋转时的密封效果也提高。

公开(公告)号：US4407513A

公开(公告)日：1983-10-04

申请号：US366810

申请日：1982-04-08

申请人： Akira Takenaka ,  Tatsuhiko Fukuoka

发明人： Akira Takenaka ,  Tatsuhiko Fukuoka

IPC分类号： F16J15/34

CPC分类号： F16J15/3412

摘要： A mechanical seal for preventing the leakage of fluid through the rotary sliding contact surfaces, in which a contact surface is provided with a plurality of fine one-way grooves having outer closed end portions. The fine grooves which are inclined outwardly and rearwardly to the relative rotation can be formed in the sliding contact surface of either the rotating member or the stationary member. If the fine grooves are formed radially or inclined outwardly and forwardly, the fine grooves may be formed in the sliding contact surface of the rotating member. The mechanical seal having such fine grooves in the sliding contact surface gives a quite good sealing effect because, during the rotation of rotating members, the leakage flow of the pressurized fluid or a mixture of liquid and gas that is sealed in on the outside thereof toward the external gas existing on the inside thereof, can be avoided. In another embodiment of the above mechanical seal having the fine grooves, the peripheral portion of at least one sliding contact surface is somewhat raised in the direction of the axis of the rotary shaft so as to increase the contact pressure between the contact surfaces, thereby enhancing the sealing effect during the stoppage of the rotating members. Therefore, the sealing effect in all the use conditions can be much improved.

摘要翻译： 一种用于防止流体通过旋转滑动接触表面泄漏的机械密封件，其中接触表面设置有多个具有外封闭端部的精细单向槽。 可以在旋转构件或静止构件的滑动接触表面中形成向相对旋转的向外和向后倾斜的细槽。 如果微细凹槽径向地形成或向外和向前倾斜，则可以在旋转构件的滑动接触表面中形成微细凹槽。 在滑动接触表面中具有这种细槽的机械密封件具有相当好的密封效果，因为在旋转构件旋转期间，加压流体或液体和气体的混合物在其外部被密封的泄漏流朝向 可以避免存在于其内部的外部气体。 在具有细槽的上述机械密封件的另一实施例中，至少一个滑动接触表面的周边部分在旋转轴的轴线方向上稍微升高，以增加接触表面之间的接触压力，从而增强 在旋转构件的停止期间的密封效果。 因此，在所有使用条件下的密封效果可以大大提高。

公开(公告)号：US4343479A

公开(公告)日：1982-08-10

申请号：US205955

申请日：1980-11-12

申请人： Tatsuhiko Fukuoka ,  Akira Takenaka

发明人： Tatsuhiko Fukuoka ,  Akira Takenaka

IPC分类号： F04B25/04 ,  F04B27/08 ,  F16J15/34

CPC分类号： F16J15/3496

摘要： A mechanical seal mounted in a compressor comprises a rotating sealing ring, a stationary mating ring and means for pressing the sealing ring against the mating ring. The mating ring is of hardened bearing steel.

摘要翻译： 安装在压缩机中的机械密封件包括旋转密封环，固定配合环和用于将密封环压靠在配合环上的装置。 配合环是硬化轴承钢。