原文:

"滑阀式真空泵的抽气原理与片泵相似,当两者结构不同。滑阀式真空泵是利用滑阀机构来改变西气腔容积的,故称华发泵。"气动管路截止阀华发泵虽然是一种老泵,但与旋片泵等比较,仪表阀组它具有允许工作压力高(104pa)、抽气量大、能在恶劣情况下连续工作,经久耐用等突出特点,所以在真空冶炼、真空干燥、真空浸渍、真空蒸馏等行业得到广泛的应用。今朝真空行业中广泛施用的油封式真空泵大多是中、小型的选片泵和中、氧气专用阀铜阀门大型的华发泵。旋片泵在较脏的气动管路球阀工作条件下,旋片泵在转子槽中卡住。尽管华发泵对这一缺点有一定程度的克服,但由于滑阀的质心中央空调专用阀相对回转中心的间隔不是定值,虽然结构上采取了一些平衡措施,但尚不能达到完全平衡,故振动难于完成消除。尤其泵的容积越大,振动亦更大。同时上述两种泵,特别是滑阀泵与其排气量相比外形尺寸显得较大。

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译文:

"Rotary piston vacuum pumps and vane pumps are pumping principle similar to that when two different structures.Rotary piston vacuum pump is used to change the slide valve body cavity volume of gas BUTTERFLY VALVESfrom west,so that Huafa pump."Silver hair pumps are akind of old pumps,rotary vane pumps,but more,it hasBALL VALVES ahigh allowable working pressure(104pa),ventilation volume,can work continuously in harsh environments,durability and other prominent features,so in avacuum melting,vacuum drying,vacuumGATE VALVES impregnation,vacuum distillation and so widely used.Now widely used in the vacuum industry mostly in the oil seal vacuum pumps,small pumps and their selection of films,the large Huafa pump.Rotary vane pump in more dirty working conditions,rotary vane pump stuck in the rotor slot.Despite this shortcoming,GLOBE VALVE Huafa pump to overcome acertain degree,but because of the mass center of slide valve relative rotation center distance is not constant,although the structure of anumber of balance measuresCHECK VALVES taken,but can not reach complete equilibrium,it is difficult to complete elimination of Zhendong.In particular,the greater the capacity of the pump,vibration is also greater.While these two pumps,in particular,displacement rotary piston pump as compared to its larger dimensions appear.

原文来源: