Peristaltic Pumps are commonly used in the medical industry, typically to pump body fluids such as blood. A major feature of these pumps is the ability to remove the pumping chamber and dispose of it so as to avoid cross contamination between pumping events. They represent a trusted and proven technology that is easy to clean between batches and delivers a reliable flow of product during production. Yet, they suffer from a number of issues that are inherent to their core technology
These pumps generate a pressure pulse inherent to the core rotary motion
Efficiency is generally low
Hose life is low due to the amount of friction and heat generated as a result of the rotary wheel crushing it
Solution
SwashPump has developed a concept model for a pump that offers a removable pumping chamber. Put simply a disposable plastic tube is threaded into the pumping chamber, connected the fluid reservoir at the inlet and the destination at the discharge. As the SwashPlate sweeps the chamber, based on a sinusoidal rate of volumetric change it squeezes the fluid around along the tube, hence producing the pumping action
The sinusoidal motion of the nutating Swashplate gently squeezes on the plastic hose as it completes the pumping cycle, resulting in very low pressure pulse
SwashPump efficiency is high
The life of the removable pumping chamber / plastic pipe is increased due to the low friction generated by the nutating swashplate on it
