A plunger metering pump for blood purification, end of the output shaft of the drive motor and the eccentric shaft is fixedly connected with the other end of the eccentric shaft on the eccentric eccentric set small shaft, the eccentric shaft through the connecting rod and the small piston is fixedly connected to the top of the upper end of the plunger sleeve, a fixed sleeve with the lower end of the plunger body fixed to the bottom; the plunger body extends into the plunger hole on the pump body vertically provided in the pump body is also arranged on the end surface of the through hole around the level, the level of the central through hole and the plunger hole is communicated with the bottom; the water inlet joint are respectively installed and drainage joint on the left and right ends of the pump body, wherein the center pore water inlet joint is installed in a water inlet one-way valve, the drainage joint is installed in the central hole of the drainage valve. The suction and discharge of the utility model ceramic plunger body vertically is easy to realize liquid, because the ceramic plunger body every movement distance accurately, so every time the liquid suction and discharge amount of high precision, has simple and reliable structure, easy assembly, low error, low cost and other features.
【技术实现步骤摘要】
【技术保护点】
一种血液净化用柱塞计量泵，包括驱动电机（２１）、泵体（１３）和柱塞体（１２），其特征在于：所述驱动电机（２１）安装在电机固定座（１８）上，该驱动电机（２１）的输出轴（２０）与偏心轴（１）的一端固定连接，两者的轴线在同一直线上，在偏心轴（１）的另一端偏心地设置偏心小轴（１ａ），该偏心小轴（１ａ）通过连杆（４）与柱塞固定套（６）的上端连接，柱塞固定套（６）的下端与柱塞体（１２）的上端相固定；所述柱塞体（１２）的下端伸入泵体（１３）上竖直开设的柱塞孔中，在泵体（１３）上还开设有贯通其左右端面的水平通孔（１３ａ），该水平通孔（１３ａ）的中部与柱塞孔的底部相连通；在泵体（１３）的左、右两端分别安装进水接头（９）和排水接头（１６），其中进水接头（９）的中心孔通过泵体（１３）的水平通孔（１３ａ）与排水接头（１６）的中心孔连通，在所述进水接头（９）的中心孔内安装进水单向阀（１０），该进水单向阀（１０）控制外部的液体向泵体水平通孔（１３ａ）内单向流动，在所述排水接头（１６）的中心孔内安装排水单向阀（１５），该排水单向阀（１５）控制泵体水平通孔（１３ａ）内的液体向外单向流动。
【技术特征摘要】
【专利技术属性】
技术研发人员：高光勇，滕朝宇，任应祥，
申请(专利权)人：重庆山外山科技有限公司，
类型：实用新型
国别省市：85[中国|重庆]
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