公开(公告)号：US20110182782A1

公开(公告)日：2011-07-28

申请号：US12985119

申请日：2011-01-05

Applicant: JIMMY DZUONG

Inventor： JIMMY DZUONG

IPC: B01L3/00

CPC classification number: B01L3/0217 ,  B01L3/0275 ,  B01L2200/025 ,  B01L2200/14 ,  B01L2300/0627 ,  B01L2300/0832 ,  B01L2300/0858 ,  B01L2300/14 ,  B01L2400/0478

Abstract: A positive displacement pump (1) is equipped with a pump cylinder (2), a pump piston (7), a cylinder space (9), a pressure sensor (10), and a pressure channel (12). A main portion (13) of the pressure channel (12) extends parallel to a longitudinal axis (3) of the pump cylinder (2), for providing fluidic connection between the cylinder space (9) and the pressure sensor (10). In the improved alternative positive displacement pump (1), the cylinder wall (4) comprises a piston sleeve (14) that is located on the inner side of the cylinder wall (4) and that extends over essentially the entire length of the pump cylinder (2) to the cylinder bottom (5). The improved alternative positive displacement pump (1) is further characterized in that, the main portion (13) of the pressure channel (12) is located in the cylinder wall (4) comprising the piston sleeve (14), which is thus preventing the pump piston (7) from touching or compromising the pressure sensor (10) or an inner surface (30) of the cylinder wall (4) when moving past the position of the pressure sensor (10). Also disclosed are a liquid handling robot that comprises a single or multiple arrangement of the positive displacement pump (1) and liquid handling workstation that comprises such a liquid handling robot.

Abstract translation: 正排量泵（1）配备有泵缸（2），泵活塞（7），气缸空间（9），压力传感器（10）和压力通道（12）。 压力通道（12）的主要部分（13）平行于泵缸（2）的纵向轴线（3）延伸，用于在气缸空间（9）和压力传感器（10）之间提供流体连接。 在改进的替代性容积式泵（1）中，气缸壁（4）包括位于气缸壁（4）的内侧上的活塞套筒（14），其基本上在泵缸体的整个长度上延伸 （2）连接到气缸底部（5）。 改进的替代正排量泵（1）的特征还在于，压力通道（12）的主要部分（13）位于包括活塞套筒（14）的气缸壁（4）中，从而防止 泵活塞（7）在移动经过压力传感器（10）的位置时不接触或损害压力传感器（10）或气缸壁（4）的内表面（30）。 还公开了一种液体处理机器人，其包括容积式泵（1）的单个或多个排列以及包括这种液体处理机器人的液体处理工作站。