| 摘要 |
PROBLEM TO BE SOLVED: To provide a wash-free type pump capable of making its complicated inner structure free of wash in regard to washing a pipe pressure feeding device for liquid or viscous liquid for solving washing problems for food staff, colored or easily congulating raw material when a product hard in washing is changed so that the washing term of the whole device is shortened, the quality of the device is improved, and/or an environmental problems is positively solved by improving a waste water management system. SOLUTION: The structure of a pump is so constituted that screw impellers are fixed so as to be built in the inside of a cylinder provided with a connection mechanism at both the end parts in the axial direction of a pipe roughly identical in diameter to pipes disposed back and forth, or to a given diameter, gears and the like are provided for the outer circumferential part of the cylinder in form of a driving rotary type rotor so as to be detachably connected with a space between a front and a rear cylindrical rotary bearing, so that it is formed into a specified type one capable of being replaced. Or it is so constituted that a rubber sleeve whose barrel part is enlarged in diameter, acting as a barrel of a vertical expansion and contraction mechanism, is provided while a linear made out of a resin sheet is also being provided inwardly, and furthermore, check valves are provided in front and in rear so as to be replaceable or disposable.
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