The utility model discloses a cylinder type rotary plunger pump, which relates to a rotary piston pump, the utility model is to provide a no cylinder type rotary plunger oil well pump sand stuck, energy saving and low production cost. The technical proposal of the utility model is that the pump cylinder is provided with a cylinder and a plunger, and a thruster thruster under the plunger body, pneumatic cylinder is provided with a thruster and rotary sealing device, the centering mechanism is arranged between the plunger and the cylinder. The utility model is used for pumping units.
【技术实现步骤摘要】
【技术保护点】
动筒式旋转柱塞抽油泵,包括柱塞和泵筒,其特征在于:旋转轴下端的螺纹与动筒推力器的上端连接,其上端的螺纹与抽油杆连接,柱塞上端的螺纹与柱塞上推力器下端连接,柱塞下端的螺纹与柱塞下推力器连接,柱塞的两端设有定心机构分别与动筒和泵筒滚动配合,动筒与泵筒之间设有定心机构,旋转密封器转动配合在动筒上,此旋转密封器的外周面上均布有螺旋叶片,叶片与泵筒间隙配合,柱塞下推力器的外周面上设有螺旋叶片,螺旋叶片之间形成的螺旋流道与泵筒和半球固定阀之间的空腔及柱塞和泵筒之间的空腔相通,在柱塞下推力器的上端设有轴向盲孔与柱塞内的轴向孔连通,柱塞下推力器内设有径向孔与其轴向孔连通;柱塞上推力器上端的 ...
【技术特征摘要】
【专利技术属性】
技术研发人员:李性伟,鲁广立,袁志毅,
申请(专利权)人:新乡市乔山机械设备有限公司,
类型:实用新型
国别省市:41[中国|河南]
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