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. 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. 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. 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. 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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