Method and device for determining rheological properties
    132.
    发明授权
    Method and device for determining rheological properties 失效
    测定流变性质的方法和装置

    公开(公告)号:US5321974A

    公开(公告)日:1994-06-21

    申请号:US72502

    申请日:1993-06-04

    CPC classification number: B01F15/00201 G01N11/14 G01N2011/0046 G01N33/383

    Abstract: A method for the measurement of rheological properties of high density slurry materials and in particular high density mill tailings. A sample of the tailings is placed within a mixing tub, with mixing paddle used to effect the mixing. A digitally controlled electric motor is used to directly drive the paddle at a constant predetermined speed or speeds. Feedback control elements, including a variable speed drive and a computer constantly monitor the mixing speed and compensate for deviations therefrom. The tub is laterally pivotable against a load cell for a direct determination of reaction torque with correlation to viscosity and other rheological properties of the mill tailings. The load cell emits signals which are conditioned and fed to the computer which correlates torque to speed and determines the rheological properties on a continuous real-time basis. The computer also compares determined torque/speed parameters to stored rheological properties of known materials.

    Abstract translation: 一种用于测量高密度浆料的流变特性的方法,特别是高密度的轧机尾矿。 将尾矿样品放置在混合桶内,混合桨用于混合。 数字控制电动机用于以恒定的预定速度或速度直接驱动桨叶。 反馈控制元件,包括变速驱动器和计算机,不断监控混合速度并补偿其偏差。 桶可横向枢转抵靠称重传感器,用于直接测定反作用力矩,与磨机尾矿的粘度和其它流变特性相关。 称重传感器发出被调节并被馈送到计算机的信号,其将扭矩与速度相关联并且以连续实时的方式确定流变特性。 计算机还将确定的扭矩/速度参数与已知材料的储存流变性质进行比较。

    Apparatus for selectively controlling a plurality of electric motors

    公开(公告)号:US4947089A

    公开(公告)日:1990-08-07

    申请号:US434805

    申请日:1989-10-30

    Applicant: Donald B. Abel

    Inventor: Donald B. Abel

    Abstract: An apparatus for selectively controlling a plurality of electric motors for driving individual work objects, the apparatus including an electrical switch which is adapted to produce predetermined speed signals for the electric motor selected, a programmable controller disposed in signal receiving relation relative to the electrical switch and which is adapted to generate a predetermined signalling sequence in response to the signal received from the electrical switch, a variable speed motor drive electrically coupled with the programmable controller, and with the electric motor selected, the variable speed motor drive selectively driving the selected electric motor at a predetermined speed in response to the signalling sequence received from the programmable controller, and a sensor adapted to indicate the work performed by the electric motor whereby the electric switch may be selectively adjusted to control the operation of the electric motor selected.

    Orbital shaker
    135.
    发明授权
    Orbital shaker 失效
    轨道摇床

    公开(公告)号:US4673297A

    公开(公告)日:1987-06-16

    申请号:US632574

    申请日:1984-07-19

    CPC classification number: G01P3/489 B01F11/0014 B01F15/00201 H02P23/0077

    Abstract: An orbital shaker apparatus which has a tray for cyclic motion is flexibly suspended from a frame which is flexibly suspended from a plurality of stationary supports. The flexible suspension constrains the tray to move only translationally along one axis with respect to the frame and constrains the frame to move only translationally along one axis perpendicular to the tray movement axis. A microprocessor is used for receiving operator input to set the speed and duration of the cyclic motion. Embodied in the microprocessor is a closed loop speed control which measures the actual speed of the cyclic movement with an interrupt routine which calculates the duration between the pulses of an optoelectric speed sensor. The actual speed is compared to the set speed and a digital "bang-bang" control signal is generated to regulate motor velocity from the difference between the two speeds.

    Abstract translation: 具有用于循环运动的托盘的轨道振动器装置可自由地从多个固定支撑件挠曲地悬挂的框架悬挂。 柔性悬挂限制托盘相对于框架沿着一个轴线平移地移动,并且限制框架仅沿垂直于托盘移动轴线的一个轴线平移地移动。 微处理器用于接收操作员输入以设定循环运动的速度和持续时间。 在微处理器中实现的是一种闭环速度控制,其通过计算光电速度传感器的脉冲之间的持续时间的中断程序来测量循环移动的实际速度。 将实际速度与设定速度进行比较,并产生数字“爆炸”控制信号,以根据两个速度之间的差异来调节电机速度。

    Clustered mixing system
    136.
    发明授权
    Clustered mixing system 失效
    集群混合系统

    公开(公告)号:US4606648A

    公开(公告)日:1986-08-19

    申请号:US636329

    申请日:1984-07-31

    CPC classification number: B01F15/00201 B01F15/00389 B01F7/1665 B01F15/00123

    Abstract: At least two levels of mixing, one adjacent the top of the vessel and one adjacent the bottom of the vessel are provided and individually driven at appropriate speeds to produce a single flow pattern in the fluid in the vessel. The bottom mixing apparatus is preferably a single large diameter impeller whereas the top mixing apparatus includes a plurality of smaller diameter impellers positioned equally distant from and symmetrical about the lower impeller's vertical axis of rotation. Each of the impellers have a converging flow field exiting the impeller.

    Abstract translation: 提供至少两个混合水平,一个邻近容器的顶部和一个邻近容器的底部,并以适当的速度独立地驱动以在容器中的流体中产生单个流动模式。 底部混合装置优选地是单个大直径叶轮,而顶部混合装置包括多个较小直径的叶轮,其相对于下部叶轮的垂直旋转轴线等距离并对称。 每个叶轮具有离开叶轮的会聚流场。

    Ink and water tester
    137.
    发明授权

    公开(公告)号:US4403867A

    公开(公告)日:1983-09-13

    申请号:US198635

    申请日:1980-10-20

    Applicant: Horace Duke

    Inventor: Horace Duke

    Abstract: An emulsification tester for determining the amount of water a known amount of material such as printers ink or shellac will absorb when agitated or mixed a precise number of times and in a precise manner is disclosed. As is well known by those skilled in the art, certain materials, especially materials such as shellac and printers ink, will not function properly unless these materials have the ability to absorb a proper amount of water. That is, the material must be able to absorb a minimum amount of water but must not absorb an excess amount of water. The tester of this invention allows a precise amount of water and a material to be tested (such as printer ink) to be agitated by mixer blades rotating at a precise selected speed and for a precise number of revolutions. In addition, the tester of this machine further includes means for very positively but slowly rotating the container such that the mixer blades clearly come into contact with all portions of the material in the container and leaves none unagitated. Thus, as an example, the water absorption characteristics of printers ink can be determined after a precise amount of agitation simply by pouring off and measuring the remaining water. The apparatus comprises a heavy-duty mixer which uses a precise DC electric motor which in turn drives a gear box connected to the mixers or agitators such that the agitators rotate at a precise revolution per minute. The container itself is driven at a slow speed (approximately 4 RPM) by a small AC motor. A sensing means connected to one of the agitators or mixer blades senses each revolution of the blades. A pulse representative of each of these revolutions is then provided to a count-down counter which counts each pulse received from said pulsing means. Thus, when a selected number of turns is preset in the counting means, and the machine started, it will be appreciated that once the counter reaches zero, electrical power is interrupted to the DC motor and AC motors thereby stopping the agitation. A light indicator, buzzer or other audible device may be attached to give notice that the mixing is complete. At that time, the water can be poured off and measured to determine the amount absorbed.

    Apparatus for controlling power delivery to a grain stirring device
    138.
    发明授权
    Apparatus for controlling power delivery to a grain stirring device 失效
    用于控制向谷物搅拌装置输送功率的装置

    公开(公告)号:US4374621A

    公开(公告)日:1983-02-22

    申请号:US315970

    申请日:1981-10-28

    Applicant: Larry Stille

    Inventor: Larry Stille

    Abstract: Apparatus for controlling delivery of power to a grain stirring apparatus is disclosed. A bridge frame (21) is supported between a shaft (34) and a circular track (24) on the wall (11) of bin (10). Frame (21) supports a trolley mechanism (45) having a rotating auger (47) operatively attached thereto. Frame (21) moves orbitally around bin (10) as trolley (45) moves radially inward and outward thereby allowing auger (47) to stir grain (12).The apparatus for controlling power delivery has a switch (151) which senses orbital movement using roller (191) to follow cam (190) fastened to shaft (34). If orbital movement is not appropriately sensed, timer (117) causes relays (119) and (133) to open thereby powering off grain stirring apparatus (20).

    Abstract translation: 公开了一种用于控制向谷物搅拌装置输送功率的装置。 桥架(21)支撑在箱体(10)的壁(11)上的轴(34)和圆形轨道(24)之间。 框架(21)支撑具有可操作地连接到其上的旋转螺旋推运器(47)的手推车机构(45)。 框架(21)随着手推车(45)径向向内和向外径向移动,围绕仓(10)轨道移动,从而允许螺旋钻(47)搅拌谷物(12)。 用于控制动力输送的装置具有开关(151),其使用辊(191)感测轨道运动以跟随紧固到轴(34)的凸轮(190)。 如果没有适当地检测到轨道运动,定时器117使继电器119和(133)打开,从而切断谷物搅拌装置(20)。

    Mixing apparatus
    139.
    发明授权
    Mixing apparatus 失效
    混合装置

    公开(公告)号:US4120051A

    公开(公告)日:1978-10-10

    申请号:US834715

    申请日:1977-09-19

    CPC classification number: B01F15/00201

    Abstract: A mixing apparatus for mixing fluids, such as drilling muds, in a reservoir, each fluid having different densities requiring different torques for proper mixing thereof, with the mixing apparatus having provisions therewith operatively controlling the motor mechanism for limiting the maximum horsepower of the motor mechanism absorbed in mixing the fluid to substantially the rated horsepower of the motor mechanism to prevent overloading of the motor mechanism.

    Abstract translation: 一种混合装置,用于在储存器中混合诸如钻井泥浆的流体,每种流体具有不同的密度,需要不同的扭矩以适当地混合,混合装置具有其配置,可操作地控制马达机构,以限制马达机构的最大马力 吸收将流体混合到马达机构的基本上的额定功率,以防止马达机构的过载。

    Mixer with automatically controlled discharge system
    140.
    发明授权
    Mixer with automatically controlled discharge system 失效
    混合器具有自动控制放电系统

    公开(公告)号:US3866799A

    公开(公告)日:1975-02-18

    申请号:US37079473

    申请日:1973-06-18

    Applicant: NAT ENG CO

    CPC classification number: B01F15/00201 B22C5/0472

    Abstract: A system for conditioning bulk material comprising a mixer having a mixing chamber and motor means driving a rotary mixing element in the chamber; an automatically controlled discharge system for discharging material from the chamber at a selected constant rate, the discharge system comprising an outlet opening formed in the mixing chamber, a discharge door adjacent the opening mounted for reciprocal vertical movement between a closed position covering the opening and an open position uncovering the opening, and a fluid motor for normally maintaining the door in a fixed neutral position partially uncovering the opening and operable to move the door out of the neutral position when a selected variation in load on the motor means is exceeded and to return the door toward said neutral position when the variation is no longer exceeded.

    Abstract translation: 一种用于调节散装材料的系统,包括具有混合室的混合器和驱动所述室中的旋转混合元件的马达装置; 一个自动控制的排放系统,用于以选定的恒定速率从室中排放材料,排放系统包括形成在混合室中的出口,邻近开口的排出门,用于在覆盖开口的关闭位置和 敞开位置露出开口,以及流体马达,用于通常将门保持在固定的中立位置,部分地露出开口,并且当超过马达装置上的所选择的负载变化并且返回时可操作以将门移出中立位置 当不再超过变化时,门朝向中立位置。

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