The function of the cylinder is to convert the pressure energy of compressed air into mechanical energy. The cylinder is a part that is easy to be ignored in the maintenance and repair of the concrete mixing plant. Here is the fault and repair method of the cylinder from the loading mixer: under normal circumstances, the cylinder should be in place quickly with the on-off switch of the solenoid valve power source; As the cylinder piston moves repeatedly, it is very important to lubricate the cylinder wall and piston. Due to improper assembly and long-term use of the cylinder, the pneumatic actuator (cylinder) is prone to internal and external leakage, insufficient output force and unstable action, poor cushioning effect, damage of piston rod and cylinder head and other faults.

1、氣缸出現內、外泄漏，內漏是指氣缸活塞組件磨損嚴重，造成那個活塞前后竄氣，影響氣缸動作的快慢，嚴重時造成開關不到位；外漏是指活塞桿與氣缸接觸的端部密封件磨損嚴重而漏氣，造成活塞桿回復速度慢，甚至回復不到位。

1. The cylinder has internal and external leakage. Internal leakage refers to the serious wear of the cylinder piston assembly, resulting in the front and rear blow by of the piston, affecting the speed of the cylinder action, and causing the switch not in place when it is serious; External leakage refers to the serious wear and leakage of the end seal between the piston rod and the cylinder, resulting in the slow recovery speed of the piston rod, or even the recovery is not in place.

2、氣缸的輸出力不足和動作不平穩，一般是因活塞或活塞桿被卡住、潤滑不良、供氣量不足，或缸內有冷凝水和雜質等原因造成的。對此，應調整活塞桿；檢查油霧器的工作是否可靠；供氣管路是否被堵塞。當氣缸內存有冷凝水和雜質時，應及時清理。

2. Insufficient output force and unstable action of the cylinder are generally caused by stuck piston or piston rod, poor lubrication, insufficient air supply, or condensate and impurities in the cylinder. In this regard, the piston rod should be adjusted; Check whether the oil atomizer works reliably; Check whether the air supply pipeline is blocked. When there is condensate and impurities in the cylinder, it shall be cleaned in time.

3、氣缸的緩沖效果不良，一般是因緩沖密封圈磨損或調節螺釘損壞所致。此時，應更換密封圈和調節螺釘。

3. The poor buffer effect of the cylinder is generally caused by the wear of the buffer seal ring or the damage of the adjusting screw. At this time, replace the sealing ring and adjusting screw.

4、氣缸的活塞桿和缸蓋損壞，一般是因活塞桿安裝偏心或緩沖機構不起作用而造成的。對此，應調整活塞桿的位置；更換緩沖密封圈或調節螺釘。

4. The damage of the piston rod and cylinder head of the cylinder is generally caused by the eccentric installation of the piston rod or the failure of the buffer mechanism. In this regard, the position of the piston rod should be adjusted; Replace the buffer seal ring or adjusting screw.

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