Flexible tube displacement pump with tube arranged in housing - has rotor assigned to pump tube which is rotated by drive organ and rotor is provided with number of rotor arms which with rotation of rotor successively depress tube

摘要

Each rotor arm(4',4",4'") carries a fixed magnetic body(9). With the revolutions of the rotor, the bodies respectively pass a transmitter(10). The transmitter is fixed at the pump housing. The magnetic fields produce countable pulses at an electronic unit. The transmitter can be a Hall sensor. The electronic unit with the reaching of a specified number of pulses interrupts the current supply to the pump drive. The switching point for the pulse counting and the current supply interruption is arranged such that with each standstill of the rotor(3), the rotor arms free the delivery chamber(7) to the discharge side of the flexible tube pump(2). ADVANTAGE - Pump gives exact reproducible delivery amounts.