Mechanical Diaphragm Metering Pump

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summary

The mechanical diaphragm metering pump is a volume change pump in principle. It is a metering pump model that uses a motor to drive a flexible diaphragm back and forth through a worm gear, thereby changing the pump chamber volume to achieve continuous liquid discharge and suction. The diaphragm is used to isolate the liquid from the driving lubrication mechanism, and the diaphragm is a static seal without a dynamic seal. Its flow rate can be continuously adjusted within the range of 0-100% according to the needs of various process flows, quantitatively conveying corrosive and non corrosive liquids without solid particles. Compared to other driving methods of metering pumps, it has lower volumetric efficiency, lower outlet pressure (generally within 1.0 MPa), smaller flow range, lower metering accuracy than plunger metering pumps and hydraulic diaphragm metering pumps. When the pressure increases, the flow rate can change by up to -10%.

characteristic

1. It can transport media with high viscosity, corrosive liquids, and hazardous chemicals. The flow can be adjusted by adjusting the stroke length and motor frequency (requiring a matching variable frequency motor).

2. The operation of the mechanical diaphragm metering pump is safe, the mechanical drive diaphragm has good sealing performance, and the assembly and maintenance are simple and safe. The addition of stainless steel reinforcement plate design at the back of the diaphragm can improve the service life of the diaphragm.

3. The diaphragm is made of a multi-layer composite structure, with PTFE acid and alkali resistant film as the layer, EPDM elastic rubber as the second layer, 3.0mm SUS304 supporting iron core as the third layer, reinforced nylon fiber cloth as the fourth layer, and EPDM rubber as the fifth layer, effectively improving the service life of the diaphragm;