公开(公告)号：US5893703A

公开(公告)日：1999-04-13

申请号：US702055

申请日：1996-08-23

申请人： Harry Peter Weinrib

发明人： Harry Peter Weinrib

IPC分类号： F04D1/14 ,  F04D29/10 ,  F04D29/08

CPC分类号： F04D1/14 ,  F04D29/108

摘要： For a pump that produces a negative pressure in a pump casing, a shaft seal system comprises a positive flow of air into the seal system to flow about shaft seals to counteract the negative pressure otherwise being communicated thereto from within the pump casing. The seals engage the rotating shaft and a lubrication passageway supplies lubricant to the shaft seals engaging the rotating shaft, which is driving the rotor. Preferably, no air flows through the seal system when the rotor shaft is stationary and a small air flow, e.g., 0.3 c.f.m. to 1 c.f.m., flows through the shaft seal when the shaft is rotating. This flow rate is preferably monitored.

摘要翻译： 对于在泵壳体中产生负压的泵，轴密封系统包括空气进入密封系统的正向流动以围绕轴密封件流动以抵消负压，而不是从泵壳体内传递到负压。 密封件与旋转轴接合，并且润滑通道为驱动转子的转轴提供润滑剂。 优选地，当转子轴静止时，没有空气流过密封系统，并且具有小的空气流，例如0.3厘米 到1厘米，当轴旋转时流过轴封。 优选监测该流量。