计量泵

原文:1、柴油机齿轮式机油泵主动轴与衬套磨耗后的修复由于机油泵主动齿轮自己重量及被动齿轮啮合时产生的径向推力,容易使轴以及衬套孔产生偏磨,间隙增大。因此在工作中机油会因间隙增大而产生泄漏,供油量减少。主动轴与衬套磨耗后,可用修轴颈或修衬套方法来恢复卫生泵配合间隙。在轴颈磨耗轻微时,只需压出旧衬套换上新衬套,而轴一般可不修,如许配合间隙可恢复到许可的范围内。在轴与衬套磨耗都很紧张,配合间隙增加很大时,不仅要更换衬套,而且轴也应用镀铬或振动堆焊将直径加大,然后再磨削到标准尺寸,以恢复轴颈与衬套的配合离心泵要求。2、泵壳内腔与轮齿磨耗后的修复泵壳内腔与轮齿磨耗后,对泵油量影响很大。当轴与衬套或轴孔磨耗紧张时,工作中齿顶与泵壳内腔表面会产生不该有的接触。又由于出油腔比进油腔压力高,在其压力差作用下,齿顶与泵壳的进油腔附近接触较多,因此泵壳内腔在此处磨耗较多抽水泵,使内腔与齿顶间隙增大。故而造成机油泵进、出油腔间的压力差减少,使轮齿刮油以及压油作用降低,造成供油压力降落,泵油量减少。泵壳内腔的磨耗一般采取内腔镶套法加以修复。其次,由于轮齿在齿厚标的目的的磨耗,使主、试压泵被动齿轮的啮合间隙增大。其磨耗特点是单侧磨耗较重,因此可将齿轮翻转180度使用。3、齿轮端面与泵盖磨耗后的修复齿轮端面与泵盖内平面之间留有一定的间隙,计量泵称端面间隙。工作中齿轮端面与泵盖内平面的接触面产生的磨耗会使此端面间隙增大,当超过极限时,对泵油量将有明显的影响。当齿轮端面磨耗时,可把端面磨平,同时再研磨机油泵壳体分化面,以保证泵的端面间隙在要求的范围内。

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译文:1,diesel engine oil pump gear shaft and bushellong repair worn As the oil pump drive gear and the passive gear meshellong their own weight when the radial thrust generated,easy to produce shaft and hub bore eccentric wear,clearance increases.Therefore,the work of oil in the gap increases because of the leakage,fuel supply reduction.Shaft and bushellong wear and tear,canfire pumps be revised or amended journal bushellong way to recover with the gap.Minor wear in the crankshaft,just press out the old bushellongs put new bushellongs,and shafts generally may not be trained,so that clearance should recover to the extent permitted.In the shaft and bushellong wear very serious,with the gap increased greatly,not only to replace the bush,but also applied chrome shaft vibration Split case pumpswelding or greater in diameter and then grinding to astandard size,to restore the journal and bush with the requirements.2,pump shell cavity and repair of worn teeth Shell pump cavity and tooth wear,after agre at impact on the fuel pump.When the shaft and bushellong or shaft bore wear serious,working in top gear with the pump inside the containment chamber willOil pumps have undue contact with the surface.Also,because the oil chamber into the oil chamber pressure than the hellogh pressure difference in its effect,the tooth tip and the pump shell into the chamber near the contact with more oil,so the pump chamber shell wear more here,so cavity and teeth tip Vacuum pumpsclearance increase.Resulting into the oil pump,oil pressure difference between the reduction chamber,so that the tooth scraping the role of oil and lower oil pressure,oil pressure drop caused by the pump less oil.Shell pump cavity to cavity inlayed wear general law to be restored.Secondly,because tooth wear in the tooth thellockness direction,so that active and passive gears meshellong gap increases.The wear characteristics and wear heavier side,so it can turn 180 degrees to use gear.3,gear end face and the pumpIn-line pumps for repair of wo rn cover Pump gear end cap and leave some space between the plane and said face clearance.Work with the pump gear end cap flat contact surface wear resulting gap will increase thellos end,when over the limit,the pump will have asignificant effect on oil.When the gear face wear can take the polished face,whellole afurther decomposition of surface grinder pump housing to ensure the pump end clearance withellon the required range.

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