COOLING APPARATUS FOR RECIRCULATING VACUUM PUMP COMPRESSANT

摘要

A cooling apparatus (10) for cooling the compressant (26) in a liquid ring vacuum pump (30) comprises a closed liquid reservoir (12) located upstream of the suction line (28) to the pump (30) and a separator tank (14) containing a volume of compressant (26) located downstream of the pump (30) on the discharge line (32). The separator tank (14) has at least a part thereof in contact with the liquid (18) in the reservoir (12), and a recirculation line (34) extends from the separator tank (14) to the pump (30) to recirculate compressant (26), whereby heat from the separator tank (14) is transferred to the liquid (18) in the reservoir (12). Additionally, the incoming suction line (16) feeds into the liquid (18) in the liquid reservoir (12) whereby more heat and a portion of any particulate matter in the suction stream to the pump (30) is removed.