The utility model relates to a vertical multi-stage pump, which solves the problem of premature failure of mechanical seals caused by the axle sleeve easy to move axially and cross the axle shoulder in the prior technology. The technical scheme adopted is that a retaining ring groove is arranged on the rotating axle, the retaining ring groove is matched with the axle shoulder, and a retaining ring is arranged in the retaining ring groove, and the retaining ring is counteracted by the hole wall of the axle sleeve. Touch fit. The effect is as follows: by setting a retaining ring, one side of the retaining ring is limited by the shoulder, the other side is in conflict with the sleeve, the diameter of the maximum diameter of the outer wall of the retaining ring is larger than the diameter of the shoulder, and the area of the axial limit of the retaining ring and the sleeve is larger, which makes the axial positioning of the sleeve more reliable, reduces the possibility of the axial movement of the sleeve, makes the mechanical seal reliable, and reduces the possibility of water leakage of the pump. The pump has a higher service life.
【技术实现步骤摘要】
立式多级泵
本技术涉及一种立式多级泵,尤其涉及一种增强轴套定位的立式多级泵。
技术介绍
对于适用于电泵的台阶轴来说,由于轴肩过小(由于轴肩外径与相邻的转轴主体部位的直径少大,但是大的不多,使得轴肩端面与轴套相抵触叠合的部位厚度小),机械密封用轴套轴向定位时,容易轴向移动,越过轴肩,脱离轴肩的限制,轴套轴向定位失效,从而导致机械密封过早失效,水泵漏水,降低了电泵的使用可靠性,影响水泵的使用寿命。
技术实现思路
本技术的目的在于解决现有技术存在的上述问题而提供一种立式多级泵,通过设置挡圈,挡圈一侧被轴肩限制,另一侧与轴套形成抵触配合,挡圈的外壁最大直径处的直径大于轴肩的直径,挡圈与轴套轴向限位的面积更多,使轴套轴向定位更为可靠,减少轴套轴向移动的可能,使机械密封密封可靠,减少水泵漏水的可能,最终使水泵具有较高的使用寿命。本技术的上述技术目的主要是通过以下技术方案解决的:立式多级泵,包括电机,设置在电机上的油室,与油室连接的泵体,所述电机驱动的转轴伸入所述泵体,所述泵体内的叶轮设置在所述转轴上,所述转轴上设置机械密封,所述机械密封一端与油室壁形成抵触配合,另外一端与轴套形成抵触配合,所述轴套的孔壁与所述转轴的轴肩形成抵触配合,其特征在于所述转轴上设置挡圈凹槽,所述挡圈凹槽与所述轴肩相配合,所述挡圈凹槽内设置挡圈,所述挡圈与所述轴套的孔壁形成抵触配合。通过设置挡圈,挡圈一侧被轴肩限制,另一侧与轴套形成抵触配合,挡圈的外壁最大直径处的直径大于轴肩的直径,挡圈与轴套轴向限位的面积更多,使轴套轴向定位更为可靠,减少轴套轴向移动的可能,使机械密封密封可靠,减少水泵漏水的可能, ...
【技术保护点】
1.立式多级泵,包括电机,设置在电机上的油室,与油室连接的泵体,所述电机驱动的转轴伸入所述泵体,所述泵体内的叶轮设置在所述转轴上,所述转轴上设置机械密封,所述机械密封一端与油室壁形成抵触配合,另外一端与轴套形成抵触配合,所述轴套的孔壁与所述转轴的轴肩形成抵触配合,其特征在于所述转轴上设置挡圈凹槽,所述挡圈凹槽与所述轴肩相配合,所述挡圈凹槽内设置挡圈,所述挡圈与所述轴套的孔壁形成抵触配合。
【技术特征摘要】
1.立式多级泵,包括电机,设置在电机上的油室,与油室连接的泵体,所述电机驱动的转轴伸入所述泵体,所述泵体内的叶轮设置在所述转轴上,所述转轴上设置机械密封,所述机械密封一端与油室壁形成抵触配合,另外一端与轴套形成抵触配合,所述轴套的孔壁与所述转轴的轴肩形成抵触配合,其特征在于所述转轴上设置挡圈凹槽,所述挡圈凹槽与所述轴肩相配合,所述挡圈凹槽内设置挡圈,所述挡圈与所述轴套的孔壁形成抵触配合。2.根据权利要求1所述的立式多级泵,其特征在于所述轴套的孔壁设置挡圈外凹槽,所述挡圈外凹槽的断面为圆弧形,所述挡圈的截面为圆形,所述挡圈的外壁贴合所述挡圈外凹槽。3.根据权利要求1或2所述的立式多级泵,其特征在...
【专利技术属性】
技术研发人员:任兵,朱广智,葛杰,陈君圣,林成波,蔡起胜,
申请(专利权)人:新界泵业浙江有限公司,
类型:新型
国别省市:浙江,33
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