Micro Pump

Centrifugal pumps, as its name says, uses the centrifugal force to promote movement of fluid. Dispite of pressure (obtained, for example, from pumps with pistons) centrifugal pumps privileges the fluid volume handled. Just put the fluid in rotation so it tends to go out on a tangent. A single outlet is provided for this purpose.

The great advantage of this project is in its ease of construction. Much of the difficulty of building this type of pump is in the need of a good seal on the motor shaft so that there is no leakage and yet with minimal friction possible. This issue has been virtually eliminated since passage of the transmission system (motor shaft) and local fluid intake were unified.

The motor is a 3v DC usually found on toys. The pump was made ​​using a water bottle cap.

(click on the pictures to enlarge)

A paper clip makes the connection between the pump and motor.

The motor shaft has been extended until the pump using a swab tube. At the other end of the tube, the rotor was made ​​using a sheet metal obtained from a common battery casing. It was cut in a circle and folded into a cross shape.

The bottom cover was closed with a transparent plastic only to allow visualization of its interior.

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