What are Equal Wall Thickness Screw Pumps?

What is the core difference between Equal Wall Thickness Screw Pumps and conventional Screw Pumps?

The most notable feature of Equal Wall Thickness Screw Pumps is the uniform wall thickness of their screw or pump body. Conventional Screw Pumps often have varying wall thicknesses due to structural design. This uniform wall thickness design reduces pressure loss caused by uneven wall thickness during media conveying, while also improving the wear and fatigue resistance of the screw and extending the service life of the equipment. Furthermore, the uniform wall thickness structure ensures smoother media flow within the pump chamber, reducing residual media, making it particularly suitable for conveying high-viscosity media that are prone to sedimentation or contain small amounts of particulates.

Why can Equal Wall Thickness Screw Pumps efficiently convey high-viscosity media?

High-viscosity media (such as crude oil, asphalt, and sludge) have poor flow properties, and conventional pump bodies are prone to high conveying resistance and unstable flow rates. The uniform wall thickness design of a screw pump creates a stable sealed chamber between the screw and the pump cavity. As the screw rotates, the sealed chamber continuously and smoothly pushes the medium from the suction end to the discharge end, preventing the medium from stagnating or generating vortices within the pump. Furthermore, the uniform wall thickness reduces the friction between the medium and the pump body, lowering conveying resistance. Even with high-viscosity media, it maintains stable flow and pressure, achieving efficient conveying.

What are the main industrial conveying applications of screw pumps with uniform wall thickness?

In the petrochemical industry, they are commonly used to transport viscous oils such as crude oil, heavy oil, and lubricating oil, and are particularly suitable for oilfield wellhead produced fluids and pipeline transportation. In the environmental protection industry, they can transport viscous media containing solid particles, such as municipal sludge and industrial waste slurry, without clogging. In the food processing industry, they are used to transport high-viscosity food ingredients such as chocolate paste, jam, and syrup. The pump cavity structure is easy to clean and meets food hygiene requirements. Furthermore, in the coatings and ink industries, they are also used to transport high-viscosity coatings and inks, ensuring stable media performance during conveying.

What maintenance points should be noted during daily use of a screw pump with constant wall thickness?

Daily maintenance begins with "media filtration." Install a filter at the pump's suction end to prevent solid impurities from entering the pump cavity and preventing wear on the screw and pump body. Next, "lubrication management" involves regularly checking the lubrication of moving parts, such as bearings, to ensure sufficient grease and prevent dry friction. Furthermore, "regular inspection of wall wear" involves using specialized tools to detect changes in the wall thickness of the screw and pump body. If wear exceeds the specified limit, replace the screw and pump body promptly to avoid affecting conveying efficiency. Finally, "downtime maintenance" involves draining the medium from the pump cavity before long-term downtime and flushing it with clean water or a specialized cleaning agent to prevent solidification and clogging of the pump cavity.