Screw compressors are specifically made to handle a wide range of dry material transfer ranging from granules, cement and plastics to sand, flour, lime and silicate. Its body contains two types of screws, better known as female and male screws. The female screws are those with concave entries while the male screws have convex entries.
Screw compressors work in opposite directions. It is the female screw that receives the driving force. The male screw, for its part, is responsible for transmitting the power driven by the female version. It goes through a set of so-called timing gears.
processes
Apart from the main functions of the male and female screws in a compressor, there are other essential parts of the process. While the screws begin to turn, the intake process takes place. This is where the air fills the intake port, thus taking up the space between the two screws.
Next to the intake phase is the compression phase. This is when the male thread seizes or blocks the female thread. During this stage, the rotation of the screws begins to decrease. As soon as the volume reaches the delivery outlet of the compressor, the exhaust phase takes place.
The escape phase is that instance in which the bolts are no longer in contact with each other. Total reliability is obtained during the procedure, which allows screw compressors to be very useful for various applications. Common examples are hydraulic power systems, electric motors, and stationary and mobile applications.
The different types and their specific applications
There is a type known as a rotary screw compressor. This is found under the types of gas compressors. It uses a mechanism through a single screw or a double counterhelical screw. While the mechanism is doing its job, gas can pass through the port in the casing and then be captured in a certain cavity. The gas is then discharged to another port in the casing. This type of screw compressor is applied in general industries such as diesel powered trailer units as seen on construction sites.
Another specific type is the oil-flooded screw compressor. This is usually functional for sealing and cooling gas charges. As the oil flows through the process, it is separated from the discharge stream before being cooled and filtered. Subsequently, the oil is recycled.
Oil-free screw compressors are also examples of this industrial machinery. Without the presence of oil, air compression is likely thanks to the screws. This type is relatively important in medical research as well as in the semiconductor industries.
