Introduction of Diaphragm Pumps

The Diaphragm Pump of NEWDOSE can make the operation of it more safe and reliable by adding auxiliary valves and adopting double diaphragms with alarms. However, it has some disadvantages. The diaphragms of Diaphragm Pumps are easy to break, especially the fixed stroke diaphragm pumps. Once its diaphragms break, the metering fluid and the hydraulic oil system will pollute each other and cause damages, which will bring grave consequences. Let’s take a look at what is the structure principle of the Diaphragm Pumps.

The Structure Principle Of The Diaphragm Pumps

The Diaphragm Pumps of NEWDOSE are composed of a motor, drive mechanism, and pump head. The rotation generated by the motor will become the reciprocating motion of the worm gear through gearing, thereby completing the working process of suction and discharge. Adjust tappet motion through turning the regulating handwheels, and achieve the purpose of flow changing through changing the telescopic distance of diaphragms. The mechanical pump of NEWDOSE has the features of no leakage, high precision of measurement, and low noise, and it’s used broadly in the industries of oil, chemical, pharmacy, textile, and so on.

Because of the isolating effect of the diaphragms, electric diaphragms pumps structurally achieves the actual isolation between the measured fluid and the drive lubrication mechanism. The high-tech structural design and the selection of new materials have greatly increased the service life of the diaphragm, coupled with the excellent corrosion resistance of PTFE (Teflon), Diaphragm Pumps now become the main type of pump in fluid metering applications.

The mechanical diaphragm metering pump of NEWDOSE uses damping stroke slide bars, which not only keep the advantages of traditional spring reset metering pumps, such as the simple structure, fewer faults, and easy to maintenance, but also overcome the fatal weakness caused by the invalid eccentric travel, such as the big pipeline impact, high mechanical vibration, broken materials, flow linearity difference, loud noise, and so on.

Advantages of Mechanical Diaphragm Pumps

1. Low cost

2. No dynamic seal, no leakage

3. Can transport high viscosity medium, abrasive slurry, and hazardous chemicals

4. High tolerance of the PTFE diaphragms

5. The maximum outlet pressure is 3MPa, and the maximum flow range is 6,000 liters per hour; The accuracy of measurements is ± 5%, and the variation of flow can be as much as 10% when the pressure goes from minimum to maximum.

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