Universal Fluid Conveyors: What Industrial Scenarios Are Single Screw Pumps Ideal For?

What Makes Single Screw Pumps Indispensable in Environmental Protection?

In the field of environmental protection, the treatment of sewage and sludge has always been a key challenge—media often contain solid particles, short fibers, and high viscosity that test the performance of conveying equipment. Single screw pumps, as rotary positive displacement pumps, form sealed cavities through the meshing of eccentric screws and stators, enabling continuous and uniform transportation of media without leakage or blockage. They are widely used in conveying industrial and domestic sewage, thickened sludge, digested sludge, and oily water, and are especially suitable for matching equipment such as oil-water separators and plate and frame filter presses. Their ability to handle media with solid content up to 40% (or even 70% for fine powders) and viscosity up to 1,000,000 cp makes them a core tool in water purification plants and waste treatment projects .

Can Single Screw Pumps Safeguard the Quality of Food and Pharmaceutical Products?

The food, beverage, and pharmaceutical industries have strict requirements for fluid conveying: the medium must not be stirred, sheared, or contaminated, and the flow rate must be precise. Single screw pumps address these demands perfectly with their gentle, pulsation-free conveying principle—sealed cavities move axially at a constant speed, ensuring that sensitive media such as syrup, honey, chocolate paste, and pharmaceutical ointments retain their original properties without structural damage. In food processing, they efficiently transport high-viscosity materials like starch paste, fruit pulp, and meat emulsion; in pharmaceutical production, they handle ointments and fermentation broths with precision. Constructed from food-grade stainless steel and non-toxic elastomers, these pumps eliminate dead zones where media might accumulate, meeting hygiene standards for direct contact with edible and pharmaceutical products .

How Do Single Screw Pumps Adapt to Harsh Conditions in Petroleum and Mining?

The petroleum and mining industries involve extreme conveying environments: high pressure, high viscosity media, and abrasive solid particles are common challenges. Single screw pumps excel here with their robust design—pressure can reach up to 48 bar by increasing stages, and rotor materials like Hastelloy and duplex stainless steel resist corrosion and wear. In oil fields, they transport crude oil, oil-water mixtures, and polymer flooding fluids, enhancing oil recovery efficiency; in mining, they handle drilling mud, mineral slurries, and underground water containing solid particles, efficiently draining wastewater to the surface. Their self-priming capability (suction lift up to 8.5 meters) eliminates the need for additional priming equipment, making them suitable for mobile operations in remote oil fields and mines .

Are Single Screw Pumps the First Choice for Chemical and Daily Chemical Production?

Chemical and daily chemical processes involve diverse media—corrosive solutions, viscous colloids, adhesives, inks, and cosmetics—each requiring specialized conveying solutions. Single screw pumps offer versatility through customizable materials: stators made of EPDM, FKM, or polyurethane resist corrosion from acids, alkalis, and organic solvents, while stainless steel bodies ensure compatibility with harsh chemicals. They are used for metering and transferring polyelectrolytes, titanium dioxide slurries, paint coatings, and cosmetic emulsions, with flow rates proportional to rotational speed for precise process control. Their low-noise operation and easy maintenance also make them ideal for continuous production lines in chemical plants and daily chemical factories .

What Role Do Single Screw Pumps Play in Specialized Industries Like Papermaking and Construction?

Specialized industries demand pumps that adapt to unique media properties. In papermaking, single screw pumps convey high-viscosity paper pulp, short-fiber slurries, and coating materials, ensuring uniform flow for consistent paper quality. In construction, they handle cement mortar, lime paste, and architectural coatings, enabling efficient spraying and transportation without clogging—even with solid particles up to 40mm in diameter. The marine industry also relies on them for bilge water treatment, oil residue transfer, and shipboard waste disposal, as their compact design and resistance to seawater corrosion suit the confined spaces of ships and ports .