Trading and engineering company focusing on process pumps
In 2023, Copenhagen Pump was asked to find and deliver a new lime dosing pump to replace an existing peristaltic pump.
The lime, which is slurried in water with a stirrer, is also kept circulating in the lime container until it is used to flocculate industrial wastewater. The industrial wastewater is flocculated to bind harmful particles that you do not want discharged to the sewer.
The binding of lime to the particles works by giving the particles enough surface area for subsequent filtration. The circulation is done to prevent the product from settling after agitation.
Allweiler progressive cavity pumps are positive displacement pumps that are characterized by being extremely pressure-stiff and pulsation-free. It is therefore suitable for pumping almost all types of media, from water to highly pressurized liquids.
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Liquids with particles or sensitive particles are easily handled by the Allweiler pump, as in addition to being a strong pump, it also handles pumping very gently. The pump is also simple and inexpensive to maintain.
Since the Allweiler ANBP pump is a positive displacement pump without a safety device, the pump should be overpressure protected and dry run protected. A dry run protection is a device that prevents the pump from running out of liquid or not starting up without liquid. For this purpose, we installed a Weber Captor flow switch. The flow switch works thermally. This means that a small amount of energy is fed to a bulb head, which registers the cooling as a result of a passing flow.
Instrument is scaled 0-100% with 10 intervals illuminated by LED indicators. Set point and speed are set by operating two easy-to-use rotary knobs. If the flow drops during operation, the instrument notifies a motor protection system, which then cuts the motor, and the same happens when attempting to start up without fluid.
