Unite static mixers are divided into SK static mixers, SV static mixers, and SX static mixers.
The SK type static mixer, also known as the single-helix static mixer,consists of helical plates twisted by 180 or 270 degrees. When installedin a pipe, adjacent helices rotate in opposite directions. Compared to the SV type static mixer, the SK type has a poorer mixing effect and exhibits asignificant scaling effect.
The SV static mixer unit is a cylindrical structure assembled fromcorrugated plates of a specific size. It has no moving parts; instead, itrelies on its special structure and fluid dynamics to disperse and miximmiscible fluids, achieving excellent mixing results.
The internal elements of the SX type static mixer consist of intersectingbars oriented at a 45° angle to the pipe axis. The mixing performanceof the SX type is between that of the SV and SK types. When used inemulsification processes, it can disperse droplets to 2-5 μ m. Forgeneral mixing processes, the non-uniformity coefficient a√x is ≤1-5%,and the scaling effect is not significant. The pressure drop calculation forthe SX type static mixer is based on the hydraulic diameter and considersthe influence of the friction coefficient due to porosity.
No Moving Parts:
This means they are durable, low maintenance, and highly reliable.
Efficient Mixing:
Even without moving parts, they quickly and uniformly mix liquids or gases.
Energy Efficient:
They don't require external power (like a motor); they use the fluid's own flow to mix, which saves electricity.
Compact Design:
They are just a short section within a pipe, so they save space and are easy to install.
Wide Applicability:
They can mix various types of liquids or gases, making them very versatile.
The fluid containing impurities enters the bottom chamber (1) of thefully automatic filter. The fluid velocity decreases in this chamber, andthe fluid continues to flow upwards, passing from the inside out throughthe specially arranged and sealed filter element assembly (2) in the filterchamber. Impurities are intercepted on the inner surface of the filterelement, and the filtered clean fluid flows out through the outlet (3).Backwashing is accomplished by utilizing the pressure differencebetween the pipeline pressure and atmospheric pressure. When thedifferential pressure transmitter (4) is drivento rotate by the motor (5), and the drain port (6) opens. At this time, thedrain port is connected to the atmosphere, creating a pressuredifference. The clean fluid on the outside of the filter elementbackwashes the filter element assembly. The backwashing suction deviceselects the dwell time for each filter element assembly based on theimpurity characteristics and backwashes each set of filter elementassemblies in the filter chamber one by one.When the differential pressure returns to its initial value, the drain valvecloses, the motor stops driving, and the filter continues to filter. Theentire process is continuous, and the backwashing water volume is small,without affecting the outlet pressure.The control system (7) can be remotely controlled by DCS, and thebackwashing time is adjustable.
The mixing process in a static mixer is achieved by mixing elements fixedinside the pipe. Due to the action of these mixing elements, the fluidrotates alternately to the left and right, constantly changing its flowdirection. This not only pushes the central fluid flow towards theperiphery but also pushes the peripheral fluid towards the center,resulting in excellent radial mixing. Simultaneously, the fluid's ownrotational motion also occurs at the interfaces between adjacentelements. This complete radial circulation mixing action significantlyreduces temperature gradients, velocity gradients, and mass gradientsacross the pipe's cross-section.
A Static Mixer is a device installed inside a pipeline that mixes fluids continuously without any moving parts. It uses internal mixing elements to create controlled turbulence and achieve efficient blending of liquids or gases.
As fluids pass through the mixer, specially designed fixed elements divide, rotate, and recombine the flow multiple times. This process creates uniform mixing of components such as chemicals, gases, or liquids.
Key advantages include no moving parts, low maintenance, compact design, energy efficiency, consistent mixing quality, and suitability for continuous industrial processes.
Static mixers are widely used in chemical processing, water treatment, oil & gas, pharmaceuticals, food and beverage, and polymer production where precise and continuous mixing is required.
Static mixers have no moving parts and rely on flow energy for mixing, while dynamic mixers use motors or rotating impellers. Static mixers are simpler, more energy-efficient, and require less maintenance.
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