Automatic surface coating system for e.g. the automotive industry has dosing pump to charge driver pipe with driver medium

摘要

The system consists of coating medium containers connected to an applicator (10) via medium pipes (5,5',13). A dosing pump (2) is positioned outside the pipes, to charge a driver pipe with a driver medium (17) for the purpose of supply the coating medium to the applicator. The driver pipe opens into the medium pipe. The pump has a cylinder (31) filled with driver medium, and a ram (18) to expel the driver medium. The driver medium is electrically non-conductive, and a pig (7) for the medium pipes consists of non-conductive material.