Vacuum ejectors are used wherever aggressive chemicals have to be sucked in. But the conventional ones tend to corrode easily due to the materials used. Therefore SMC manufactures a vacuum ejector made of PFA.
Suction by vacuum is the most common (and logical) procedure in factories with aggressive chemicals. For this purpose pumps would simply be too large and also too expensive. With the Venturi effect liquids can be sucked in easily and safely. But unfortunately, most materials corrode much too quickly – after all, they come into permanent contact with aggressive chemicals.
The vacuum ejector that does not corrode
We know how important stable processes are. Therefore SMC has developed the first vacuum ejector made of PFA for you. PFA is a material that can come into contact with all chemicals without any signs of fatigue or corrosion. So the optimal material for vacuum ejectors.
The proven mode of operation, the Venturi principle, has of course remained the same: The vacuum is generated by gas, air or liquids. The flowing medium is introduced into the ejector and accelerated by a cross-sectional constriction in the Venturi nozzle. There, the dynamic pressure (dynamic pressure) increases while the static pressure of the medium decreases to a minimum. At the same time, the pressure in the pick-up tube, which is located exactly in the narrow part, drops – thus creating a differential pressure/vacuum.
Another special feature of the vacuum ejectors from SMC is their space-saving design. The PFA used makes them particularly durable, which makes the price-performance ratio particularly attractive.
Where are vacuum ejectors used?
In most cases, vacuum ejectors are used for suctioning drain overflow trays. Another field of application is the mixing of media. For example when diluting acids or alkalis or when mixing different chemicals. The mixing ratio can be determined by throttling the flow rate. The faster the medium flows through the ejector, the greater the negative pressure.
Wherever aggressive chemicals are used, the vacuum ejector made of PFA scores with its many advantages: Durable, inexpensive to purchase and with extremely small space requirements.
Would you like to know whether you too can benefit from this innovation? Please contact us – we will be happy to advise you!