Screw pump

Screw pump is a kind of pump for liquid transport by rotating the screw to produce a spiral driving principle. It is a kind of positive displacement pump, suitable for high viscosity liquid, fragile particles or easy to pump corrosive liquid occasions. The following are some basic characteristics and working principles of the screw pump:

How it works:

Screw construction: The screw pump contains one or more screws, which are located in the rotor of the pump. These screws are usually in a spiral shape and rotate to produce spiral motion.

Screw movement: When the screw of the pump rotates, the liquid is sucked into the screw spiral groove and then pushed along the axial movement direction of the screw.

Screw clearance: There is some clearance between the screw and the pump housing, which allows the liquid to be pushed along the direction of rotation of the screw. The size of this gap has a certain effect on the performance of the pump.

Screw number: Screw pumps can be single screw or multi-screw, depending on the specific application and pump design.

Positive displacement: The screw pump is a positive displacement pump, which means that during each rotation cycle, it always pushes the liquid with the same volume, regardless of the output pressure.

Features and applications:

High viscosity liquid: screw pump is suitable for conveying high viscosity liquid, such as petroleum, asphalt, lubricating oil and honey.

Temperature sensitive liquid: Because the friction generated by the screw pump is relatively small when working, it is suitable for transporting temperature-sensitive liquids.

Fragile particles: The screw pump can transport liquids containing particles more gently, suitable for the treatment of fragile particles or fragile materials.

Chemical delivery: Some screw pumps are designed to transport corrosive or hazardous chemicals.

Industrial applications: Screw pumps are widely used in the petroleum industry, chemical industry, food and pharmaceutical industries.

It should be noted that the performance and use characteristics of the screw pump depend on the specific screw pump design and manufacturing, so when choosing a screw pump, it is necessary to consider factors such as liquid properties, flow requirements, working pressure and temperature.