氣動球閥維修時應注意查明球閥的管確實游泳卸壓后,拆除行動,以防止損壞零件密封面分解期間,處理和維護方面上的灰塵球閥適用于刷刷刷和壓縮空氣吹掃,還想堅持外部活動的一部分,干凈的球閥,接下來詳細為你介紹相關內容。

        一、氣動球閥維修注意事項

        1、必須先查明氣動球閥，下游管路已卸壓，方可拆卸分解作業。分解和重組時必須小心，防止損壞零件的密封面，特別是非金屬零件，使用專用工具時拆下O形圈。

        2、裝配時必須對稱、逐步、均勻地擰緊法蘭上的螺栓。清洗劑應與球閥橡膠件、塑料件、金屬件及工作介質（如氣體）兼容。當工作介質為氣體時，可用汽油（GB484-89）對金屬零件進行清洗。用純凈水或酒精清潔非金屬部件。

        3、分解后的單個部件可浸泡清洗。對于未分解的非金屬部件，可以用沾有清洗劑的干凈精細的絲綢布清洗（避免纖維脫落粘在部件上）。清洗時，清除所有粘在墻上的油脂、污垢、膠水、灰塵等。非金屬部件清洗后應立即從清洗劑中取出，不可長時間浸泡。

        4、清洗后要將洗凈的墻面表面清洗劑揮發后（清洗劑不能浸泡絲巾擦拭）進行組裝，但不宜長時間使用，否則會生銹、灰塵污染。新部件組裝前也應清洗干凈。

        5、使用油脂潤滑。潤滑脂應與球閥金屬材料、橡膠件、塑料件和工作介質兼容。當工作介質為氣體時，可用作特種潤滑脂221。在密封槽表面涂一薄層潤滑脂，在橡膠密封件上涂一薄層潤滑脂，在閥桿密封面和摩擦面上涂一薄層潤滑脂。

        6、裝配時不允許金屬碎屑、纖維、油脂（指定用途除外）灰塵等雜質、異物等污染，粘附或停留在零件表面或進入型腔。

        二、氣動球閥的維修保養

        1、氣動球閥清洗

        球閥外觀上，閥桿和閥桿螺母上有梯形螺紋，閥桿螺母和支架上的滑動部件以及齒輪、蝸桿和蝸桿部件，簡略沾上許多灰塵、油污和介質殘留等贓物，球閥就會攻擊磨損和腐蝕。因此，保持球閥外側和活動部件的清潔，保持球閥油漆的完好顯然是非常重要的。球閥上的灰塵適合刷刷和壓縮空氣吹掃;梯形螺紋與齒間的贓物適合清洗布;有油和殘油球閥適用于蒸汽吹掃，甚至用銅絲清洗，直到加工表面、合作表面顯示金屬光澤，油漆表面顯示油漆發生停止。疏水閥應由專人扶住，每班不少于一次，并準時打開疏水閥和疏水閥底部的塞子進行沖刷，或準時打開沖刷閥，避免球閥堵塞。

        2、氣動球閥潤滑

       球閥梯形螺紋、閥桿螺母與支架滑動件、軸承件、齒輪與蝸輪、蝸桿嚙合件等配合的活動部件，都需要優良的潤滑條件，減少相互沖突，避免相互磨損。有些部位設有專門的油杯或油嘴，如在工作中損壞或丟棄，應予以糾正，加油以疏通。潤滑部位應根據具體情況及時潤滑。常開、高溫球閥適用于距離從一周到一個月加油一次;不常開啟、不高溫的球閥加油周期可更長。

       3、潤滑劑有油、黃油、二硫化鉬和石墨等。高溫球閥不適合和油、黃油一起使用，黃油在高溫下會融化扔掉，但適合寫二硫化鉬和擦拭石墨粉。對于需要潤滑的外露部位，如梯形螺紋、齒輪等部位，如果選用黃油等潤滑脂，容易感染粉塵，而選用二硫化鉬和石墨粉潤滑。

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.