在有色冶炼生产中,广泛地使用着各种类型的真空机械设备,如水环式真空泵、往复式真空泵、旋片式机械真空泵等。上述真空机械大都是我国五十年代仿苏的老式产品,其通病是效率低、电耗高、结构复杂。我厂共有SZ型水环真空泵29台,每天耗电约三万度,占厂总用电量的5%左右。由于 In the non-ferrous smelting production, widely used various types of vacuum machinery and equipment, such as water ring vacuum pumps, reciprocating vacuum pumps, rotary vane mechanical vacuum pumps. Most of the above-mentioned vacuum machinery is the imitation of the Soviet Union in the fifties of the old-fashioned products, the common problem is inefficiency, high power consumption, complex structure. I plant a total of 29 water ring SZ-type vacuum pump, power consumption of about 30,000 degrees per day, accounting for about 5% of the total plant electricity. due to