本发明防止煤块破碎效果好，破碎率低，且具有圆形立仓的防堵塞作用。
Said invention has good effect for preventing coal block from being broken, and its coal block breaking rate is low.
套管的弹性作用不仅不会堵塞阀门，还能够碎裂固化的石灰。
The flexing action of the sleeve not only unplugs the valve, but also breaks up the lime.
某些自然产生的矿物质沉淀可能附着在阀门上，堵塞水路，造成阀门不起作用。
Certain naturally occurring mineral deposits may adhere to the valve, blocking waterways, rendering it inoperative.
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