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23
2020
-
09
Piston rod seal on the reason why the piston rod cannot work
Piston rod seal is widely used in industrial production, piston rod seal on the piston rod can not work
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Piston rod sealWidely used in industrial production,Piston rod sealRegarding the reason why the piston rod cannot work:
The pressure is insufficient, the oil enters the hydraulic cylinder is not connected to the hydraulic circuit, and after the operation command is given, the rod remains fixed; The gauge is connected near the cylinder port and there is no pressure display. The reason is that the reversing valve is not reversed. It is caused by poor lubrication system, stuck or damaged elastic policy, oil stain or impurity can be stuck or sliding part, etc. The inlet and exhaust holes of the electromagnetic pilot valve are blocked by mud and other debris, the closing is not tight, the movable iron core is stuck, the circuit is faulty, and the reversing valve cannot be replaced normally.
Piston rod sealRegarding the reason why the piston rod cannot work. Circuit fault is divided into control circuit fault and electromagnetic coil fault. Check the valve circuit fault should be manually rotated several times before the knob to see if the valve can change direction normally under rated air pressure, normal change direction, is the circuit fault. During the inspection, the voltage of the electromagnetic coil is measured with an instrument to determine whether the rated voltage is reached. If the voltage is too low, further check the power supply of the control circuit and the related travel switch circuit. The directional valve cannot be changed under the rated voltage. Check the connectorWhether the (plug) is loose or contacts the solenoid coil incorrectly. The method is to unplug the plug and measure the resistance of the coil. If the resistance value is too large or too small, the electromagnetic coil is damaged and should be replaced.
The system does not provide. Malfunctions and pump check valves and the main causes of hydraulic elimination.Piston rod sealRegarding the reason why the piston rod cannot work, check whether the hydraulic pump can output oil. If there is no oil output, the steering information of the hydraulic pump is incorrect, the parts are seriously worn or damaged, and the internal resistance of the suction pipe is large or air leaks, so that a hydraulic pump cannot produce oil. Oil production of the pump, should check the return pipe, see this part overflow. Fail safety valve, pressure relief valve open, clean check or replace the spring, restore its performance. After checking the overflow valve and cleaning the data, the fault problem has not been completely eliminated. Disassemble the relevant valve, clean and check the size of the sealing working gap and various sealing system devices, and replace the damaged sealing treatment device.
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