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1、重力式机械呼吸阀 重力式机械呼吸阀是靠阀盘本身的重量与罐内外压差产生的上举力相平衡而工作的。当上举力大于阀盘的重量时,阀盘沿导杆升起,气体从油罐中排出,卸压后阀盘靠自身的重量落到阀座上。实践证明,这种呼吸阀常因导杆锈蚀而使阀盘卡阻,冬季使用时,阀盘易冻结在阀座上,当油罐排、吸气频繁时,阀盘连续跳动,容易产生磨损,严密性不好,造成
1, Gravity mechanical breathing valve Gravity mechanical breathing valve is based on the valve plate itself and the weight of the tank pressure difference between the internal and external force generated by the work force balance. When the lifting force is greater than the weight of the valve plate, the valve plate rises along the guide rod and the gas is discharged from the oil tank. After the pressure relief, the valve plate falls on the valve seat by its own weight. Practice has proved that this valve is often caused by corrosion of the valve stem and the valve plate jammed in winter, the valve plate is easy to freeze on the valve seat, when the tank row, frequent suction, the valve continuous beating, prone to wear and tear , Tightness is not good, cause