How It Works: Rotary Screw Vacuum Pumps Though the rotary screw vacuum pump may not have been around for as long as other vacuum technologies (such as liquid ring vacuum pumps), it nevertheless has become one of the most frequently used technologies in industrial vacuum applications today.To get more news about SEEPEX Pump Parts, you can visit hw-screwpump.com official website. How Do Screw Pumps Work? Rotary screw pumps are positive displacement pumps that consist of two mating screw rotors that rotate in opposite directions; this rotation is what moves the trapped air/gas along the length of the screws. As the trapped gas moves along the screws, it becomes compressed and is eventually discharged on the opposite end. It’s important to note that these vacuum pumps are designed to have no metal-to-metal contact within the pump housing, which results in minimal wear on the pump and less equipment overhauls. Screw pumps can be either oil-sealed or dry. Oil-sealed screw pumps use oil for lubrication, sealing, and cooling purposes; they are ideal for rough vacuum applications that have no clean vacuum requirements, including woodworking and plastics. Dry screw pumps do not use oil/lubricant in the chamber. Rather, these are typically air-cooled and are free of any oil emissions, and can also achieve higher vacuum than oil-sealed screw pumps. A variety of applications can benefit from using screw pumps, including woodworking, packaging, cleaning and drying, and pick and place.If there is one thing that we like seeing around here, it’s cool videos that highlight the ways mankind has developed to machine metals into the shapes and sizes that are needed for different jobs. When it comes to cars, some of the neatest looking parts are inside the cases of superchargers. There’s the cool looking straight or twisted rotors of a Roots style blower and then there’s the hypnotic screw supercharger that takes the root concept and makes it more efficient and effective. Now, these designs were not initially developed for use on engines and it took decades and decades to adapt them to help making horsepower. The screw and Roots blower were designed to be used as air pumps for things like blast furnaces, mines, and other occupational and industrial needs. Turns out, they are still used heavily in these occupational and industrial applications and that means that they need to be produced in a massive range of sizes. That is exactly what you are going to see in this video. You’ll see rotors and screws that look like something that might be found on a big engine and then you will see stuff that seems to belong on a locomotive, ship, or other mondo spot. Hell, look at the photo above and this guy checking a set of screws that are bigger than he is!