Ponndorf Peristaltic Pump Principle of Operation

Ponndorf offers the most extensive line of peristaltic pump technologies. First the basis of peristaltic pumping involves a compressable hose or tube material that is compressed at a point (occluded). This occlusion point is then moved along the hose from suction to discharge causing a pumping action. Ahead of the occlusion point the liquid is forced to move towards discharge. Behind the occlusion point the hose recovers to it's original geometry. This creates a negative pressure causing new fluid to be drawn into the pump's suction.

There are two major divisions in peristaltic pump design. These are the dry running and the lubricated designs. These designations refer to whether the internal rotor that occludes the hose (and located outside of it) uses rollers (the "dry running" design) or uses shoes immersed in a lubrication bath (the "lubricated" designs).

        "Lubricated"                     "Dry Running"

The primary advantages of Dry Running Roller Peristaltic Pump Designs are there simplicity and lower power requirements.

The primary advantage of Lubricated Shoe Peristaltic Pump Designs is higher discharge pressure capability.

 

 

In addition, Ponndorf is unique in it's Dual Head Hose Pump Designs. This proven design type uses two parallel peristaltic heads in a single pump. This doubles the capacity of the pump and allows high flow rates at low pump speeds. Such low speed operation is critical to dramatically extending hose life. The piping of a dual hose pump can be to combine the two suction and discharge lines or leave them independent going to different areas of the plant. Installation space and expense is decreased since the footprint is much less verses two separate pumps and only one motor is required to drive both pumps.