The vacuum pump in the laboratory is mainly powered by a brushless motor. The diaphragm inside the vacuum pump reciprocates through the circular motion of the motor, so that the air in the pump cavity is compressed and drawn into a fixed volume of vacuum (negative pressure), which produces a pressure difference between the pump inlet and external atmospheric pressure. Small vacuum pump generally uses DC motor, the volume of ac motor can not be made very small. So the use of DC motor micro vacuum pump is very popular with the public.
Miniature brushless vacuum pump - brushless motor, long service life, main features:
1, the suction end and discharge end can withstand a lot of load (that is, a lot of resistance), even if the blockage is normal, will not damage.
2, no oil, no pollution to the working medium, maintenance-free, 24 hours of continuous operation, so that the medium is rich in water vapor, can be installed in any direction;
3, long life: the use of better raw materials, equipment, process production of pump parts, life multiplication; All moving parts are durable products, with imported high-quality brushless motor, all-round improve the life of the pump.
4, using special imported brushless motor. In addition to providing two power lines (positive and negative), but also provide three additional signal lines "PWM speed regulation, motor feedback, motor start and stop", truly "full function"; Motor speed can be adjusted, the output flow of the pump can be changed through the duty ratio, the speed of arbitrary.
5, brushless motor PWM speed regulation function: through the circuit (PWM pulse width modulation) can directly adjust the flow of the pump, completely without valve regulation, simplify the gas system, can meet the load changes.
6, brushless motor start and stop function: add 2-5V voltage can directly stop the pump, without disconnecting the power line; Add 0-0.8V voltage, start the pump; It's easy to control.
7, low interference: unlike brush motor, there will be clutter pollution power supply, interference with electronic components, and even lead to the control circuit and LCD crash; It doesn't interfere with the control circuit.
8, overheat overload protection and perfect self-protection function.
