Principle of Injection Pump Machine：

When working, the single-chip microcomputer system sends out control pulses to make the stepping motor rotate, and the stepping motor drives the screw rod to turn the rotary motion into linear motion, pushing the piston of the syringe for injection and infusion, achieving high-precision, smooth and pulsation-free liquid transmission. The injection speed can be set by the operator through keyboard operation. After the syringe pump is started, the CPU provides the motor drive voltage by means of D/A conversion. The motor rotation detection circuit is a group of photoelectric coupling circuits that generate pulse signals through the rotation of the motor, and this pulse signal is fed back to the CPU, and the CPU controls the motor voltage according to this feedback to obtain the set speed.

Classification of syringe pumps

According to the purpose, it can be divided into medical and non-medical, as well as laboratory micro-injection pumps and industrial syringe pumps. According to the number of channels, it can be divided into single channel and multi-channel (dual channel, four channel, six channel, eight channel, ten channel, etc. ), according to the working mode can be divided into single push and push-pull and two-way push-pull mode, according to the structure can be divided into split type and combined type, and so on.