Device for gravimetric metering and pneumatic suction conveying of fluidizable bulk materials
    1.
    发明授权
    Device for gravimetric metering and pneumatic suction conveying of fluidizable bulk materials 失效
    用于重量计量和气动抽吸输送可流动散装材料的装置

    公开(公告)号:US06293153B1

    公开(公告)日:2001-09-25

    申请号:US09426915

    申请日:1999-10-26

    IPC分类号: G01L700

    CPC分类号: B65G53/66

    摘要: A device for the metering of fluidizable bulk materials, having a storage tank and a mass-flow-measuring device for the material and a fluidizing device, which is connected to the storage tank via an aperture of adjustable size, and a control valve for controlling the supply of compressed air to the fluidizing device, wherein a pressure gauge is provided downstream of the fluidizing device, in the direction of flow, and the pressure gauge and control valve are connected via a first control circuit, and the supply of compressed air to the fluidizing device is metered by this control circuit in such a manner that a constant, in each case preselectable subatmospheric pressure prevails in the fluidizing device, and the mass-flow-measuring device and the aperture of adjustable size are connected via a second control circuit, and the size of the adjustable aperture is set by this control circuit in such a manner that a defined quantity of bulk material enters the fluidizing device.

    摘要翻译: 一种用于计量可流动散装材料的装置,具有用于材料的储罐和质量流量测量装置和流化装置,该装置通过可调节尺寸的孔连接到储罐,以及用于控制的控制阀 向流态化装置供应压缩空气,其中在流化装置的下游沿着流动方向设置压力计,并且压力计和控制阀通过第一控制回路连接,并将压缩空气供给到 流化装置以这种方式计量,使得在流化装置中以预定的低于大气压的压力为一常数,并且质量流量测量装置和可调节尺寸的孔径经由第二控制电路 ,并且通过该控制电路设定可调节孔径的大小,使得限定量的散装材料进入流化装置。