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发明公开
CN102556922A 用于配送液体的计量泵 失效 - 权利终止 转让 复审申请

用于配送液体的计量泵
摘要：
公开包括与容器连接的软管的用于计量液体的泵，其中减压阀位于软管中。外壳限定用于收容软管的开口，其中压缩表面位于邻近开口处。往复构件具有泵送元件和密封元件。驱动件移动密封元件用于对着减压阀上游的压缩表面箍缩软管以用于截留在密封元件和减压阀之间的液体。驱动件移动泵送元件用于对着压缩表面压扁软管以用于泵送截留的液体以从减压阀排出计量的液体量。
摘要（英）：

A pump for metering a liquid is disclosed comprising a flexible tube connected to a container with a pressure relief valve located in the flexible tube. A housing defines an aperture for receiving the flexible tube with a compression surface located adjacent to the aperture. A reciprocating member has a sealing element and a pumping element. A drive moves the sealing element for pinching the flexible tube against the compression surface upstream from the pressure relief valve for trapping liquid between the sealing element and the pressure relief valve. The drive moves the pumping element for collapsing the flexible tube against the compression surface for pumping the trapped liquid to discharge a metered quantity of the liquid from the pressure relief valve.

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