This paper briefly introduces the sealing principle of the screw sealing feed water pump, and deals with its frequent trip problem arising from inadequate pressure difference of seal water.

在对螺旋密封式给水泵的密封原理作简要介绍的基础上，针对其因密封水压差小而导致频繁跳泵的问题进行了讨论。

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High-speed tube filling and sealing machine, sticker screw cap machine, cartoning machine, warehousing logistics equipment and relevant form a complete set of production line of high-tech enterprises.

高速软管灌装封尾机、贴膜拧帽机、装盒机、仓储物流设备及相应配套生产线的高科技企业。

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The sealing principle of sealing cavity in single thread twin screw pump is the same as that in double thread twin screw pump.

单头双螺杆泵与双头双螺杆泵密封腔的密封原理相同。

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