| 摘要 |
PROBLEM TO BE SOLVED: To solve such a problem of a spreader that the chemical is sprayed back or leaked from a clearance on a connecting part of the spreader and an injection pipe. SOLUTION: In this structure of connecting the spreader 20 and the injection pipe 5 by connecting a bellows pipe 31 to an injection port 30 of a power spreader 20 for spreading the chemical such as granular, dust formulation or the like, and connecting the injection pipe 5 through a rotatable joint K, a locking member 35 for connecting the joint K and the injection pipe 5 is mounted on a rotary part M of the joint K, and further a taper part N is formed at an injection pipe 5 side with respect to the rotary part M at both of the joint K and the injection pipe 5.
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