Diaphragm metering pump diaphragm service life
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Dalian Riva's three-piston diaphragm metering pump. After the new pump was used for 6 months, the diaphragm pressure on the motor side alarmed. Medium entered the hydraulic oil and the diaphragm was damaged. The same situation occurred again 3 months after replacement. Please tell me how long the service life of the diaphragm is generally and what is the cause of the damage?
It is related to medium characteristics, sealing materials, hydraulic oil level, and pressure. The specific reasons need to be eliminated one by one.
The same medium, the same operating temperature, pressure, hydraulic oil grade, the same refueling amount, and no other conditions have changed. The life of the new pump diaphragm is twice as long as that after replacement. The diaphragm is imported, and the quality is unquestionable. I have never been able to find the reason, and I have a headache! !
The normal service life of the Dalian Liva pump is 2 years. You said that the presence of medium in the hydraulic oil indicates that both diaphragms are broken. There are three situations in this situation: 1. Check the inlet vacuum, 2. There is a problem with the oil supply valve of the diaphragm, 3. The design inflection point on the edge of the diaphragm is too small. It also depends on whether it is an M500 pump head or an M900 pump head. If you don’t understand, you can add WeChat 13589226713 or qdhrk2010
M900 three-piston pump, inlet pressure 3Bar, oil supply valve check is normal. I communicated with the service provider many times and could not find the reason. The foreigner directly blamed the operation problem. Please give me some advice:handshake
Check the cleanliness of the conveyed media and the operating conditions
This is the diaphragm of the M900 pump head. If you are willing to add me on WeChat 13589226713, I will solve the problem for you.
Did you produce the diaphragm yourself and renovate the old pump?
We renovate old pumps and produce them ourselves.