Kuivapumppujen

Kuivapumppujen, also known as dry vacuum pumps, are a type of positive displacement pump that do not require oil or water for lubrication or sealing within the pumping chamber. This distinguishes them from wet pumps, such as liquid ring pumps, which use a fluid to create a seal and cool the pump. Instead, kuivapumppujen rely on internal mechanisms and precise clearances to generate vacuum.

The core principle behind most kuivapumppujen involves rotating elements that trap and move gas from the inlet to the outlet. Common designs include screw pumps, claw pumps, and scroll pumps. In a screw pump, two intermeshing screws rotate in opposite directions, creating expanding cavities at the inlet that draw in gas and then compressing it as the cavities shrink towards the outlet. Claw pumps utilize two intermeshing rotors shaped like claws that rotate without contact, pushing gas along. Scroll pumps employ two spiral-shaped scrolls, one stationary and one orbiting, to create progressing cavities that move gas.

The primary advantage of kuivapumppujen is their oil-free operation, which eliminates the risk of process contamination from lubricant. This makes them ideal for applications in sensitive industries like semiconductor manufacturing, pharmaceuticals, and food processing. They also typically offer lower operating costs due to the absence of consumables like oil and water, and reduced maintenance requirements. However, they can be more sensitive to dust and particles in the gas stream, and may generate higher operating temperatures compared to some wet pump technologies. Their efficiency can also be influenced by the gas being pumped and operating pressures.