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粉末输送泵空车运转工作中注意的事项

Time: 2016/9/26 15:34:22

    粉末输送泵在安装成功后,在准备正式投入生产的时候要进行空车运转工作。
    一:把各跟输料管的风门全部打开,风机的总风门全部关上。
    二:开动通风机和关风器。
    三:风机开动后,观察数分钟。如果风机运转平稳,无异常现象,即可把总风门逐渐开大。这时要特别注意电动机的电流,不要超过其额定值。
    四:然后到各根输料管的接料器处,用手感触是否有风并比较其大小。如果发现个别管子无风或风力不大,应首先检查其进风口是否畅通。对于那些从作业机进风的进料管,应使作业机上有一定的进风口,并保持作业机内部的风道通畅。
    五:取少量物料送到各接料器处,看能否被吸走,如有个别管子不能吸走物料,则可开大总风门。此时对于吸力过大的管子可关小其自身的风门。这样,使所有输料管风力都调节到大致相同。
    六:观察和检查网络各部位有无漏风现象,电动机和风机轴承有无过热现象。
    七:经过如此初步调整后,继续让风机连续运转半小时到一小时,然后停车检查各部分有无不正常现象。
    以上是凭感官来进行初步调整。为了更准确做好试车准备,在有条件的情况下,可在输料管的中段用皮托管和压力计测量其中的动压。在空车运转时,输料管中的风速通常可调节到比设计的工作风速大百分之二十到百分之四十。设计浓度较高的管子,风速可调高一些,反之则低一些。

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