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一、防尘问题PYD900、PYB1200弹簧圆锥破碎机原设计采用的防尘装置是循环水防尘，但效果不理想，水压很难控制，水压过高易使循环水进入碗形瓦里，使油水混合；水压低达不到防尘目的。另外，循环水槽易被沉淀污泥堵塞，清理权不方便。1989年对PYD900圆锥破碎机改用“海绵”防尘
First, the dust problem PYD900, PYB1200 spring cone crusher used to design the dust-proof device is recycled water dust, but the effect is not ideal, the water pressure is difficult to control, the water pressure is too high to make the circulating water into the bowl-shaped tile, So that oil and water mix; water pressure less than the purpose of dust. In addition, the circulating water tank is easily clogged with sedimentation sludge, cleaning right is not convenient. In 1989 the PYD900 cone crusher to use “sponge” dust