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    • 2. 发明授权
    • Apparatus for pneumatically conveying bulk material
    • 用于气动输送散装材料的装置
    • US4909676A
    • 1990-03-20
    • US187423
    • 1988-04-28
    • Dieter HeepNorbert EberhardHans HoppeReinhard ErnstRobert Storf
    • Dieter HeepNorbert EberhardHans HoppeReinhard ErnstRobert Storf
    • B65G53/58B65G53/52B65G53/66
    • B65G53/521
    • An apparatus for pneumatically conveying bulk material includes a conveyor line for transporting the bulk material and a secondary line which carries clean gas and is sectionized by spaced three-way/two-way directional control valves. Each control valve is actuated by a pressure transmitter which compares the actual pressure in the conveyor line with the desired pressure in a third line carrying a fluid at a desired pressure decreasing in downstream direction in accordance with the pressure drop in the conveyor line during normal operation. A communication between the conveyor line and the second line is provided by respective branch lines which define the third connection of the control valves and are multiply connected to the conveyor line. Thus, upon encountering a pressure drop in an area of the conveyor line, the respective pressure transmitter actuates the pertaining control valve which shuts off downstream section of the second line and connects the second line with the conveyor line for introducing clean gas into the conveyor line at the desired area thereof.
    • 用于气体输送散装材料的装置包括用于输送散装材料的输送线和携带清洁气体的二次线,并由间隔开的三通/双向方向控制阀分段。 每个控制阀由压力变送器驱动,该压力变送器将输送线中的实际压力与在正常运行期间根据输送线中的压降在下游方向上沿着期望压力承载流体的第三线中的期望压力进行比较 。 输送线和第二线之间的连通由各自的分支线提供,这些分支线限定了控制阀的第三连接并且被多路连接到输送线。 因此,当在输送线的区域中遇到压降时,相应的压力传感器致动相关的控制阀,其关闭第二管线的下游部分,并将第二管线与输送线连接,以将清洁气体引入输送线 在其期望的区域。