本实用新型结构简单，易于加工，装卸极为方便、快捷，而且只能定向装配，不会反装刀盘。
The utility model has simple structure, easy processing and convenient and rapid assembly and disassembly, only can be directionally assembled, and cannot install the cutter head reversely.
应当注意，出口止回阀不能装反或出现卡死现象。
It should be noted that the outlet check valve cannot be installed backwards or stuck.
垫圈放置在螺母一侧，不得装反。
垫圈放置在螺母一侧，不得装反。
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