Knowledge for domestic production of screw pumps for steam turbines achieved

As reported, the first produced pump has been successfully installed in a steam turbine of Shahid Salimi (Neka) Power Plant in northern Mazandaran Province.To get more news about Screw Pump, you can visit hw-screwpump.com official website.

According to Hossein-Ali Taziki, who is a deputy manager at the mentioned power plant, before Iran, only a few developed countries like Sweden, the U.S., Germany, and the UK had access to the knowledge for manufacturing such pumps.

A screw pump is an axial-flow gear pump, similar in operation to a rotary screw compressor. Three types of screw pumps include the single-screw, two-screw, and three-screw.

In the single-screw pump, a spiraled rotor rotates eccentrically in an internal stator. The two-screw pump consists of two parallel intermeshing rotors rotating in a housing machined to close tolerances. The three-screw pump consists of a central-drive rotor with two meshing idler rotors; the rotors turn inside of a housing machined to close tolerances.
The Benefits Of Screw Pumps
Fluid flow processes are one of the five main classes of unit operations in chemical processing. Fluid flow processing, as you know, includes the transfer, filtration, solids fluidization and transportation activities. Centrifugal pumps have been the preferred industry standard to manage fluid flow processing, but in some cases these pumps can be inefficient and costly.

Positive Displacement (PD) screw pumps can be a viable alternative to centrifugal pumps, when such inefficiency is found. The PD screw pumps are designed to handle a wide variety of liquids, including those with higher viscosities. Benefits of screw pump technology in chemical fluid processing include the ability to handle a wide range of flows, pressures, liquid types and viscosities, offering a constant flow despite backpressures, and many more.

Twin-Screw Positive Displacement Pumps: The New Kid on the Block

Twin-screw positive displacement pumps are the new kid on the block when it comes to reliable, flexible, and efficient technology for food, beverage, personal care, biotech, and pharma industries. These devices are a new spin on positive displacement pumps, which move fluids by continually displacing the area occupied by fluid. Twin-screw pumps, enhance the capabilities of positive displacement pumps through an innovative design: one of the screws is driven from the power source (a motor or engine, for example), and timing gears are used to rotate the second screw. The fluid then fits in between the screw cavities, and the screws work together, eventually rotating and intermeshing to convey the product in-and-out of the discharge.To get more news about NETZSCH Pump Accessories, you can visit hw-screwpump.com official website.

Twin-screw pumps handle almost any product

The advantage of these pumps is their ability to handle almost any liquid, regardless of viscosity, lubricity, and abrasiveness. They can handle extremely delicate fluids, from mayonnaise to paints and pigments to creams or shampoos, precisely because their unique features – lower speed capabilities and minimum pulsation – help the devices to be gentle to shear-sensitive products. For example, twin-screw pumps can handle strawberry jam without turning it into strawberry mush.

Twin-screw pumps also outshine other designs in their ability to handle extremely viscous or thick products (like jams, cheese, peanut butter, and meat), or otherwise difficult-to-pump fluids. While other pumps may experience cavitation problems when dealing with viscous products, twin-screw pumps are able to handle this challenge without hiccups.

Fast pumping rates increase functionality

The flexibility of twin-screw pumps comes from their ability to operate over a wide range of pressures and speeds. They can run at a wide range of speeds – including slow speeds – and flow ranges from 200 gpm (833 L/min) to 11,000 gpm (41,635 L/min) are attainable. This speed-efficient ability is particularly attractive because running times can be substantially increased for the appropriate processes. In addition, this design delivers a consistent volume of liquid over a wide range of discharge pressures. This characteristic makes them ideal in any irregular supply situation.

Another big advantage of twin-screw positive displacement pumps is that they can speed up significantly to handle the CIP (Clean-in-Place) process with the same pump. Normally, CIP requires two pumps due to flow differences between process and cleaning fluid; one pump pushes the product through the system, while another is used to clean the pipe. With twin-screw pumps, only one pump is needed; they have the capability to run a thick fluid like butter or soup, and immediately pump a cleaning system through it – saving companies valuable time and resources.