Casting pneumatic diaphragm pump is a pump on the market more common, the use of a very wide range of commonly used in the industry for conveying a variety of corrosive liquids, with particles of liquid, high viscosity, volatile, flammable , Toxic liquid, although the instrument is good, but for a long time will inevitably have a breakdown, the following Xiaobian for everyone to introduce the common faults of casting pneumatic diaphragm pump. Casting pneumatic diaphragm pump common fault introduced 1. Poor pump, pumping speed slower. This phenomenon generally have the following situations, one gas pressure reduction. Take a look at the pressure of the inlet pressure gauge, the pressure value of 4 to 7 kg for normal. Then check the position of the gas valve opening, such as the gas source is opened and closed solenoid valve, then check the solenoid valve plastic valve is damaged, resulting in plastic valve can not be fully open. Second, silencer blockage, gas can not be quickly discharged, resulting in slow pumping speed. Third, compressed air, water or impurities too much. Into the diaphragm pump valve blockage after the intake, or stuck with valve. Fourth, with the upper and lower end caps with valve due to the impact of the valve spool often lead to damaged valve cover leakage. Five is the pump inner four ring seal wear and tear. 2. Traffic reduction. This phenomenon generally have the following situations, one import and export one-way valve (plastic ball) wear smaller. Or a bar, large particles stuck plastic ball. As a result, when the material is discharged from the material discharge port, the liquid material is recharged again and the materials are pressed back from the material supply port. Second, diaphragm diaphragms often stretch the deformation, resulting in smaller volume of the material chamber. Third, black, thick layer of membrane damage. Axis driven not go in place. 3. Pump does not move. There may be several cases of this phenomenon. First, the valve core serious wear stuck. Second, the shaft sleeve wear. At this point should be replaced copper sleeve. Third, both ends of the shaft screw fall. Fourth, both layers of the diaphragm are broken. Five is the diaphragm pump upside down or flat. Spool can not be reversed (first generation and second generation) 4. There are impurities or oil inside the material. This is generally caused by rupture of the diaphragm. 5. Import and export leakage. First, the screw is not fastened, the second is the ball seat deformation or O-ring damage, and third, the pump casing is not on both sides of the hole tilt, resulting in two discharge port or feed port is not in the same plane. Further reading: Motor IFAT China's top ten brands Guangzhou Exhibition building water pump manufacturers ranking ptc Show article belongs to Internet industry (Xiamen) Co., Ltd. All are welcome to reprint, please indicate the source and author of: Asian pumps Network Editor : Gogoing (QQ / wechat: 181817456) starting: http://beng.liuti.cn/ (service hotline: 400-6030-811)