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    • 7. 发明申请
    • Piston pump
    • 活塞泵
    • US20060159574A1
    • 2006-07-20
    • US10561978
    • 2004-06-01
    • Gerhard Winiger
    • Gerhard Winiger
    • F04B7/00
    • F04B7/0053
    • The invention relates to a piston pump whose piston (4), via its upper and lower piston faces, delimits the working space inside the pump cylinder (5) on both sides. The working space (c) is joined via a lever system (19, 22, 25, 28, 31) to two force-guided inlet valves (14, 16) and two force-guided outlet valves (10, 12) that each alternately open and close for filling or discharging the working volume upon reaching both final positions of the piston. An additional working volume, which is reduced by the volume portion of the piston rod, is obtained by the piston being acted upon twice per working stroke as described by the invention thus nearly doubling the efficiency and resulting in a delivery flow with few pulsations. A small residual pulsation remains only from the short period of time during which the valves change from open to closed upon reaching both end positions of the piston inside the cylinder. According to the invention, the design of the piston pump makes it possible for two or more piston pumps to be synchronously operated by coupling their drive levers (31, 40) to a common piston rod (35) and that, in doing this, different stroke lengths can be set by modifying the lever ratios.
    • 本发明涉及一种活塞泵,其活塞(4)经由其上活塞和下活塞面在两侧的泵缸(5)内限定工作空间。 工作空间(c)通过杠杆系统(19,22,25,28,31)连接到两个强制引导的入口阀(14,16)和两个强制引导的出口阀(10,12) 打开和关闭,以在达到活塞的最终位置时填充或卸载工作容积。 通过活塞杆的体积部分减小的额外的工作体积是通过本发明所述的每个工作冲程的活塞作用两倍而获得的,因此几乎使效率提高了一倍,并且导致了几乎没有脉动的输送流。 只有从气缸内的活塞的两端位置开始,阀从打开到关闭的短时间内才能保持小的残留脉动。 根据本发明,活塞泵的设计使得两个或更多个活塞泵可以通过将它们的驱动杆(31,40)联接到公共活塞杆(35)而同步操作,并且在这样做时,不同的 可以通过修改杠杆比来设定行程长度。
    • 8. 发明授权
    • Reversible expansible chamber hydraulic pump
    • 可逆膨胀室液压泵
    • US4605360A
    • 1986-08-12
    • US696166
    • 1985-01-29
    • James M. Swartwood
    • James M. Swartwood
    • F04B7/00F04B19/22F04B21/02
    • F04B7/0053Y10T137/8667
    • A reversible, positive displacement, expansible chamber hydraulic pump with only three moving parts. Intended for manual operation where the creation of high fluid pressures is desired, the pump consists of a rotating input shaft with a single eccentric cam. The cam operates both a piston and a slide valve which are located at a relative angle of ninety degrees from one another about the axis of the cam. The slide valve controls fluid flow to and from the pump cylinder such that fluid flow reverses upon reversal of rotation of the input shaft and such that fluid flow is blocked when the piston is at top or bottom dead center.
    • 一个可逆的,正排量,可膨胀室液压泵,只有三个运动部件。 用于需要产生高流体压力的手动操作,该泵由具有单个偏心凸轮的旋转输入轴组成。 凸轮同时操作活塞和滑阀,所述活塞和滑阀相对于凸轮的轴线彼此相对于相对角度相差90度。 滑阀控制流入泵缸的流体流动,使得当输入轴的旋转反向时流体流动反向,并且当活塞处于顶部或底部死点时流体流动被阻挡。
    • 9. 发明授权
    • Rotary shaft driven reverse osmosis method and apparatus
    • 旋转轴驱动反渗透方法及装置
    • US4288326A
    • 1981-09-08
    • US27664
    • 1979-04-06
    • Bowie G. Keefer
    • Bowie G. Keefer
    • B01D61/02B01D61/06B01D61/10B01D61/20C02F1/44C30B29/36F03D9/00F04B1/02F04B5/02F04B7/00F04B11/00F04B53/14B01D31/00B01D13/00
    • B01D61/06F03D9/00F04B1/02F04B11/0083F04B5/02F04B53/143F04B7/0053B01D2313/18B01D2313/246C02F1/441F05B2220/62Y02E10/72
    • Reverse osmosis, particularly for water desalination, uses semipermeable membranes which selectively permeate purified water from a feed solution pressurized by a reciprocating feed pump driven by rotating crankshaft. Pump action is assisted by depressurizing concentrate fluid within the pump cylinder, which has an internal displacer separating feed and concentrate fluids. Directional valves controlling concentrate fluid flow to and from pump cylinder are actuated mechanically by crankshaft. A dwell interval is provided in displacer motion to permit completion of directional valve actuation while displacer is stationary and displacer rod is providing compression or decompression action to approximately equalize pressure differences across valve ports prior to valve actuation. Detrimental concentration polarization is reduced by reducing pressure and flow fluctuations across membranes by using a differential surge absorber, a multi-feed cylinder pump in which the feed cylinders are phased apart, or a single feed cylinder pump with one or more recirculating cylinders phased equally from the feed cylinder to supply pulses of recycled concentrate fluid. In the multi-cylinder pumps, actuation of the piston rod of one cylinder can be used to actuate a directional valve of another cylinder, which can be a spool valve integral with displacer rod.
    • 反渗透,特别是对于海水淡化,使用半透膜,其选择性地从由旋转曲轴驱动的往复式进料泵加压的进料溶液中渗透净化水。 泵的作用是通过在泵筒内减压浓缩液辅助,其具有分离进料和浓缩液的内部置换器。 通过曲轴机械地致动控制浓缩液流向和从泵筒流出的方向阀。 在置换器运动中提供停留间隔以允许完成定向阀致动,同时置换器是静止的,并且置换杆在气门致动之前提供压缩或减压作用以近似均衡跨越阀口的压力差。 通过使用差动浪涌吸收器,多进料气缸泵(其中进料缸相对分开)或具有一个或多个循环气缸的单个进料缸泵减少了通过膜的压力和流量波动来减小有害浓度极化, 进料圆筒供应循环浓缩液的脉冲。 在多缸泵中,一个气缸的活塞杆的致动可用于致动另一个气缸的方向阀,其可以是与置换杆成一体的滑阀。