| 摘要 |
PROBLEM TO BE SOLVED: To provide a paste discharge device capable of preventing the leakage of paste from a seal face. SOLUTION: In a shaft type multiple-plunger pump which is used for the paste discharge device for discharging paste in a slurry state, a scraping groove (the outer side groove 32c, the inner side groove 32d, an intermediate groove 32e) for scraping the paste which is adhered to the seal face of a seal disc sliding and connecting to a slide face 32a is provided at a position which corresponds to an arrangement of recesses 33b and 33c for a communication port provided in the seal disc and a position which covers the whole range of the seal face by these three types of scraping grooves in the slide face 32 orthogonalizing to a rotary shaft of a plunger disc which is rotated and driven by a motor and in which a plurality of cylinder holes being penetrated by the plunger. As a result, the adhesiveness is ensured by always eliminating adhered matters on the seal face, thereby the leakage of the paste from the seal face can be prevented.
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