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    • 4. 发明授权
    • Butterfly valve
    • 蝶阀
    • US4406441A
    • 1983-09-27
    • US330717
    • 1981-12-14
    • Norbert LukeschJosef Kapeller
    • Norbert LukeschJosef Kapeller
    • F16J15/16F16J15/3208F16J15/54F16K1/226F16K41/06F16K31/44
    • F16J15/3208F16J15/54F16K1/2268
    • The valve disk of a butterfly valve is carried by a valve shaft, which is mounted in bearing bushings, which are fitted in the valve body. Each bearing bushing is formed in its outside peripheral surface with two peripheral grooves and between said grooves with diametrically opposite grooves for receiving sealing rings and axial sealing strips, respectively. The inner peripheral groove is disposed adjacent to the valve body. The outer peripheral groove is adjacent to the hub of the valve disk. Said hub surrounds the adjacent bearing bushing at its end protruding into the interior of the valve body. The two axial grooves register with the valve disk when the same is closed. To ensure a long life and a permanently tight seal, the outer peripheral groove contains two superimposed sealing rings. The upper one of said superimposed sealing rings consists of a polytetrafluoroethylene strip, which is narrower than the peripheral groove and has free ends which abut and define an oblique joint.
    • 蝶阀的阀盘由安装在安装在阀体中的轴承衬套中的阀轴承载。 每个轴承衬套在其外周表面上形成有两个周向槽,并且在所述槽之间分别具有用于接收密封环和轴向密封条的径向相对的槽。 内周槽与阀体相邻设置。 外周槽与阀盘的轮毂相邻。 所述轮毂围绕相邻的轴承衬套在其端部突出到阀体的内部。 当相同的密封时,两个轴向槽与阀盘配准。 为了确保长寿命和永久密封,外周槽包含两个重叠的密封环。 所述叠加的密封环中的上部由聚四氟乙烯条形成,其比周边槽窄,并且具有邻接和限定倾斜接头的自由端。
    • 9. 发明授权
    • Sealing device for a valve stem of a valve
    • 阀门阀杆密封装置
    • US5927685A
    • 1999-07-27
    • US39740
    • 1998-03-16
    • Frank Gosling
    • Frank Gosling
    • F16K5/06F16K41/04F16K41/06F16J15/24
    • F16K41/046F16K5/0694Y10T137/5762Y10T137/8326
    • A valve includes a column having an outer end portion defining a threaded bore, an outer mediate portion defining a first receiving recess communicating with the threaded bore, an inner mediate portion defining a passage communicating with the first receiving recess, and an inner end portion extending outwardly from a valve body and defining a second receiving recess communicating with the passage, and a valve stem having a first end portion formed with an outer thread, and a second end portion extending through the passage and formed with an annular flange received in the second receiving recess. A sealing device includes a primary set packing received in the first receiving recess, a secondary seal received in the second receiving recess and urged on the annular flange, a gland nut formed with an outer thread fixedly engaged in the threaded bore, a first biasing member mounted between the primary set packing and the gland nut, a lock nut fixedly mounted on the outer thread of the valve stem, and a second biasing member mounted between the gland nut and the lock nut.
    • 阀包括具有限定螺纹孔的外端部的柱,限定与螺纹孔连通的第一容纳凹槽的外侧中间部分,限定与第一容纳凹部连通的通道的内部中间部分,以及延伸 从阀体向外并且限定与通道连通的第二容纳凹部,以及具有形成有外螺纹的第一端部的阀杆和延伸穿过通道的第二端部,并且形成有在第二端部中容纳的环形凸缘 接收凹槽。 密封装置包括容纳在第一容纳凹部中的初级组合密封件,容纳在第二容纳凹部中并被推压在环形凸缘上的第二密封件,形成有固定地接合在螺纹孔中的外螺纹的压盖螺母,第一偏压构件 安装在主集合填料和压盖螺母之间,固定地安装在阀杆的外螺纹上的锁紧螺母和安装在压盖螺母和锁紧螺母之间的第二偏置构件。
    • 10. 发明授权
    • Retrofit valve stem seal assembly
    • 改装阀杆密封组件
    • US5601276A
    • 1997-02-11
    • US600403
    • 1996-02-12
    • John J. Wordin
    • John J. Wordin
    • F16K41/02F16K41/06
    • F16K41/026
    • A retrofit valve stem seal assembly, which can be retrofitted to existing quarter-turn valves already in service, is provided. The retrofit valve stem seal assembly is added to the valve stem by inserting a valve stem adaptor onto the valve stem and firmly attaching the adaptor to the valve stem. The inner surface of the valve stem adaptor fits on the valve stem. To prevent leaks between the valve stem adaptor and the valve stem, "O" rings are installed in the valve stem adaptor to bear against the valve stem. A rotatable valve stem adaptor includes a sliding tractrix surface for sliding contact with a stem packing. The stem packing includes a complementary tractrix surface for contacting the sliding tractrix surface on the valve stem. Wear between the contacting surfaces is uniform at all points of contact between the sliding tractrix surface and the complementary tractrix surface, creating and maintaining a dynamic seal. The stem packing also includes an outer cylindrical surface for contacting a complementary cylindrical surface of the valve bonnet creating and maintaining a static seal.
    • 提供了一种改进的阀杆密封组件,其可以被改装到已经使用的现有四分之一转阀。 通过将阀杆适配器插入阀杆并将适配器牢固地连接到阀杆上,将改进的阀杆密封组件添加到阀杆。 阀杆适配器的内表面装配在阀杆上。 为了防止阀杆适配器和阀杆之间的泄漏,阀杆适配器中安装有“O”形环以抵靠阀杆。 可旋转的阀杆适配器包括用于与阀杆填料滑动接触的滑动表面。 阀杆填料包括用于接触阀杆上的滑动表面的互补的管线表面。 接触表面之间的磨损在滑动轨道表面和互补轨道表面之间的所有接触点处是均匀的,产生并保持动态密封。 阀杆填料还包括用于接触阀帽的互补圆柱形表面的外圆柱形表面,从而产生和保持静密封。