Failure Analysis of Leakage in the Detection Hole of Mechanical Diaphragm Metering Pump

The mechanical diaphragm metering pump adopts a double-membrane design and a laminated multilayer diaphragm structure that makes the diaphragm evenly stressed and durable; the double diaphragm made of PTFE has excellent corrosion resistance and anti-permeability; the diaphragm status monitoring system can output when the diaphragm is broken Signal, it can work until the diaphragm is replaced or the pump is directly stopped. It does not pollute the metering medium. The precise eccentric structure is designed with cam and spring eccentric mechanism and integral sleeve adjustable eccentric transmission mechanism; whether it is stopped or in operation, through Fine-tuning the knob can realize smooth and stable output flow adjustment.

The metering pump market is promising, so if you are interested in it, there is some knowledge you must know. During the use of mechanical diaphragm metering pumps, the metering pump must be inspected frequently, and sometimes the inspection hole is found to be leaking. What is the reason?

Ⅰ. Failure analysis of leakage in the detection hole of mechanical diaphragm metering pump

1. There is foreign matter on the diaphragm surface of the mechanical diaphragm metering pump, and the breach is pierced by the foreign matter;

2. The diaphragm break of the mechanical diaphragm metering pump is at the edge indentation fold;

3. The diaphragm break of the mechanical diaphragm metering pump is close to the opening of the pump head outlet, and the diaphragm is deformed or presents a crack similar to a cut;

4. The diaphragm break of the mechanical diaphragm metering pump is at the opening of the pump head inlet;

5. The diaphragm surface of the mechanical diaphragm metering pump is not damaged. The diaphragm assembly is not compressed, or the highly permeable medium leaks from the inside of the assembly.

Ⅱ. The solution to the leakage failure of the detection hole of the mechanical diaphragm metering pump

1. Clean and clean the pipeline filter and overflow end parts of the mechanical diaphragm metering pump, and replace the diaphragm assembly or diaphragm;

2. Adjust the compression torque of the pump head of the mechanical diaphragm metering pump. Clean and clean the flow-end parts, replace the diaphragm assembly or diaphragm;

3. The appearance of the mechanical diaphragm metering pump holds the pressure instantly, causing deformation or rupture. Replace the diaphragm assembly or diaphragm;

4. Check the inlet conditions of the metering pump to confirm whether there is insufficient suction. Improve the suction conditions, clean and clean the flow-end parts, replace the diaphragm assembly or diaphragm;

5. Replace the diaphragm assembly. For high-permeability media, replace the contact material to improve the pressing force of the diaphragm assembly.