气动球阀维修时应注意查明球阀的管确实游泳卸压后,拆除行动,以防止损坏零件密封面分解期间,处理和维护方面上的灰尘球阀适用于刷刷刷和压缩空气吹扫,还想坚持外部活动的一部分,干净的球阀,接下来详细为你介绍相关内容。

        一、气动球阀维修注意事项

        1、必须先查明气动球阀，下游管路已卸压，方可拆卸分解作业。分解和重组时必须小心，防止损坏零件的密封面，特别是非金属零件，使用专用工具时拆下O形圈。

        2、装配时必须对称、逐步、均匀地拧紧法兰上的螺栓。清洗剂应与球阀橡胶件、塑料件、金属件及工作介质（如气体）兼容。当工作介质为气体时，可用汽油（GB484-89）对金属零件进行清洗。用纯净水或酒精清洁非金属部件。

        3、分解后的单个部件可浸泡清洗。对于未分解的非金属部件，可以用沾有清洗剂的干净精细的丝绸布清洗（避免纤维脱落粘在部件上）。清洗时，清除所有粘在墙上的油脂、污垢、胶水、灰尘等。非金属部件清洗后应立即从清洗剂中取出，不可长时间浸泡。

        4、清洗后要将洗净的墙面表面清洗剂挥发后（清洗剂不能浸泡丝巾擦拭）进行组装，但不宜长时间使用，否则会生锈、灰尘污染。新部件组装前也应清洗干净。

        5、使用油脂润滑。润滑脂应与球阀金属材料、橡胶件、塑料件和工作介质兼容。当工作介质为气体时，可用作特种润滑脂221。在密封槽表面涂一薄层润滑脂，在橡胶密封件上涂一薄层润滑脂，在阀杆密封面和摩擦面上涂一薄层润滑脂。

        6、装配时不允许金属碎屑、纤维、油脂（指定用途除外）灰尘等杂质、异物等污染，粘附或停留在零件表面或进入型腔。

        二、气动球阀的维修保养

        1、气动球阀清洗

        球阀外观上，阀杆和阀杆螺母上有梯形螺纹，阀杆螺母和支架上的滑动部件以及齿轮、蜗杆和蜗杆部件，简略沾上许多灰尘、油污和介质残留等赃物，球阀就会攻击磨损和腐蚀。因此，保持球阀外侧和活动部件的清洁，保持球阀油漆的完好显然是非常重要的。球阀上的灰尘适合刷刷和压缩空气吹扫;梯形螺纹与齿间的赃物适合清洗布;有油和残油球阀适用于蒸汽吹扫，甚至用铜丝清洗，直到加工表面、合作表面显示金属光泽，油漆表面显示油漆发生停止。疏水阀应由专人扶住，每班不少于一次，并准时打开疏水阀和疏水阀底部的塞子进行冲刷，或准时打开冲刷阀，避免球阀堵塞。

        2、气动球阀润滑

       球阀梯形螺纹、阀杆螺母与支架滑动件、轴承件、齿轮与蜗轮、蜗杆啮合件等配合的活动部件，都需要优良的润滑条件，减少相互冲突，避免相互磨损。有些部位设有专门的油杯或油嘴，如在工作中损坏或丢弃，应予以纠正，加油以疏通。润滑部位应根据具体情况及时润滑。常开、高温球阀适用于距离从一周到一个月加油一次;不常开启、不高温的球阀加油周期可更长。

       3、润滑剂有油、黄油、二硫化钼和石墨等。高温球阀不适合和油、黄油一起使用，黄油在高温下会融化扔掉，但适合写二硫化钼和擦拭石墨粉。对于需要润滑的外露部位，如梯形螺纹、齿轮等部位，如果选用黄油等润滑脂，容易感染粉尘，而选用二硫化钼和石墨粉润滑。

When repairing a pneumatic ball valve, it is important to ensure that the pipeline of the ball valve is indeed depressurized before dismantling to prevent damage to the sealing surface of the parts during decomposition. During handling and maintenance, dust on the ball valve should be dealt with. The ball valve is suitable for brushing and compressed air purging. It is also necessary to adhere to the external activities of the ball valve to keep it clean. Next, I will introduce the relevant content to you in detail.

1. Precautions for pneumatic ball valve maintenance

1. Before dismantling and decomposing the pneumatic ball valve, it is necessary to ensure that the downstream pipeline has been depressurized. Care must be taken during decomposition and reassembly to prevent damage to the sealing surfaces of the parts, especially non-metallic parts. When using specialized tools, remove the O-rings.

2. During assembly, the bolts on the flange must be tightened symmetrically, gradually, and evenly. The cleaning agent should be compatible with the rubber, plastic, and metal parts of the ball valve, as well as the working medium (such as gas). When the working medium is gas, gasoline (GB484-89) can be used to clean the metal parts. Pure water or alcohol should be used to clean non-metallic components.

3. The individual components after disassembly can be soaked and cleaned. For non-metallic components that have not been disassembled, they can be cleaned with a clean and fine silk cloth dampened with cleaning agent (to avoid fibers falling off and sticking to the components). When cleaning, remove all grease, dirt, glue, dust, etc. that are stuck to the wall. Non-metallic components should be removed from the cleaning agent immediately after cleaning and should not be soaked for a long time.

4. After cleaning, the assembled wall surface should be allowed to dry after the cleaning agent has evaporated (the cleaning agent should not be soaked in a scarf for wiping). However, it should not be used for extended periods, as this may lead to rust and dust contamination. New components should also be cleaned before assembly.

5. Use grease for lubrication. The lubricating grease should be compatible with the metal materials, rubber parts, plastic parts, and working medium of the ball valve. When the working medium is a gas, special lubricating grease 221 can be used. Apply a thin layer of lubricating grease on the surface of the sealing groove, a thin layer on the rubber sealing part, and a thin layer on the sealing and friction surfaces of the valve stem.

During assembly, contamination, adhesion, or retention of impurities and foreign objects such as metal debris, fibers, grease (except for designated purposes), dust, etc. on the surface of parts or entering the mold cavity is not allowed.

II. Maintenance and repair of pneumatic ball valves

1. Cleaning of pneumatic ball valve

In terms of the appearance of ball valves, the valve stem and its nut feature trapezoidal threads. The sliding components on the valve stem nut and bracket, as well as gears, worms, and worm components, are prone to accumulation of dirt, oil, and residual media, which can cause wear and corrosion to the ball valve. Therefore, it is crucial to keep the exterior and moving parts of the ball valve clean and maintain the integrity of the ball valve paint. Dust on the ball valve is suitable for brushing and compressed air purging; dirt between the trapezoidal threads and teeth is suitable for cleaning with a cloth; ball valves with oil and residual oil are suitable for steam purging, or even cleaning with copper wire, until the machined and mating surfaces exhibit a metallic luster, and the painted surfaces show that the paint has been removed. The drain valve should be held by a designated person at least once per shift, and the drain valve and the plug at the bottom of the drain valve should be opened on time for flushing, or the flushing valve should be opened on time to prevent blockage of the ball valve.

2. Lubrication of pneumatic ball valve

Moving parts such as ball valve trapezoidal threads, valve stem nuts and bracket sliding parts, bearing parts, gears and worm gears, and worm gear meshing parts all require excellent lubrication conditions to reduce mutual conflict and avoid mutual wear. Some parts are equipped with special oil cups or oil nozzles. If they are damaged or discarded during work, they should be corrected and lubricated to unclog. Lubrication points should be lubricated in a timely manner according to specific circumstances. Normally open, high-temperature ball valves are suitable for lubrication once a week to once a month; ball valves that are not frequently opened and do not operate at high temperatures can have a longer lubrication cycle.

3. Lubricants include oil, butter, molybdenum disulfide, graphite, etc. High-temperature ball valves are not suitable for use with oil or butter, as butter will melt and drip at high temperatures. However, they are suitable for molybdenum disulfide and graphite powder. For exposed parts that require lubrication, such as trapezoidal threads and gears, if lubricating grease such as butter is used, it is prone to dust contamination. Instead, molybdenum disulfide and graphite powder are preferred for lubrication.