| 摘要 |
<p>A suction assembly (10) employs an air induction tube (12) to induct air into the recirculating water pump to cause the pump to cease pumping operation when the front face (24) of the assembly is blocked. The induction tube (12) is connected to a bleed path formed between the induction tube and a surrounding coaxial face tube (29) extending into the assembly from the front face (24). When the face is blocked by hair or the like, water in the induction tube bleeds into the main chamber (31) of the assembly and empties the induction tube (12). Air is then pulled into the pump, causing the pump to lose prime thereby reducing pump pressure to zero and allowing the hair or other blocking material to be removed.</p> |
