Metering pump and valve actuator generally composed. Using compressed air as power source, for all kinds of corrosive liquid, with particles of liquid, high viscosity, volatile, flammable, poisonous liquid can be pumped exhaust. The metering pump will be damaged during use, generally divided into diaphragm damage. Import and export valve damage, several driving device damage etc., Keyu mechanical Xiaobian intimate summed up the little knowledge of metering pump maintenance.

1. diaphragm damage

Because diaphragm metering pump diaphragm is vulnerable parts, the reasons are aging, wear, high temperature, high pressure and other factors, maintenance methods only with change

2. the inlet and outlet valve is damaged

Due to the vulnerability of the inlet and outlet valve diaphragm metering pump, due to aging, high temperature, high pressure, abrasion and blockage (common cause) maintenance method and other factors: if it is blocked first disassembled for cleaning methods, and then assembled back can be used, if aging wear affect the sealing needs to be replaced.

3. drive device

Diaphragm, the inlet valve, the main components of the outlet valve, in the process of use, each part needs to pay attention to maintenance

Damage of 4. driving device

The general is two places: motor and gearbox damage damage damage. Motor damage may be due to lack of phase voltage is too low or too high or gearbox damage affecting the normal rotation of motor, maintenance or repair. The method can only change with the gearbox damage there may be no regular replacement of oil (mainly) or motor reversal caused by long time maintenance, repair or change with the way.