Build DIY Mini Water Pump: Solve Problems Now

[Shadow-Shocker]

I am building a mini water pump out of a 3L plastic container, a 6V mini motor, 12 inch straws, a cut up CD for a cover (in the pic it is what is between the fan and straw), and bits of a soda can to make up a fan for the motor. Problem is when I tested the product, not enough water/air is coming out of the straws I am not quite sure I am using the right motor to help pull up the water, the distance of the straws, or the thickness of the fan. There may be more factors to consider, but I am not quite sure. Any help will be very appreciated.

 

[berkeman]

I am building a mini water pump out of a 3L plastic container, a 6V mini motor, 12 inch straws, a cut up CD for a cover (in the pic it is what is between the fan and straw), and bits of a soda can to make up a fan for the motor. Problem is when I tested the product, not enough water/air is coming out of the straws I am not quite sure I am using the right motor to help pull up the water, the distance of the straws, or the thickness of the fan. There may be more factors to consider, but I am not quite sure. Any help will be very appreciated.

Welcome to the PF.

How do you prime your pump arrangement?

 

[CWatters]

Can I check how it is meant to work? Is the idea that the fan blows air into the bottle and you want the increased pressure to push water up the straw? If so then I suspect the problem is the pressure that the fan can generate. Even quite large computer fans only manage to generate a pressure equivalent to a few mm of water...

http://www.corsair.com/en-gb/air-series-sp120-pwm-high-performance-edition-high-static-pressure-fan-twin-pack

Features

• Outstanding static pressure of up to 1.29 mmH20

 

[Shadow-Shocker]

Welcome to the PF.

How do you prime your pump arrangement?

Nevermind I changed the position of the pump of where it is suppose to be so it would have more leverage of pumping more water.

 

[Shadow-Shocker]

Can I check how it is meant to work? Is the idea that the fan blows air into the bottle and you want the increased pressure to push water up the straw? If so then I suspect the problem is the pressure that the fan can generate. Even quite large computer fans only manage to generate a pressure equivalent to a few mm of water...

http://www.corsair.com/en-gb/air-series-sp120-pwm-high-performance-edition-high-static-pressure-fan-twin-pack

Yeah I kind of figured that one out quick, that is why I am going to put the pump in the water and arrange the straw to be attached on the side where the fan is. You can look up models like them on youtube "How to make a mini water pump"

 

[CWatters]

OK so it doesn't blow air into the bottle.

 

[Shadow-Shocker]

OK so it doesn't blow air into the bottle.

I changed the design of the motor, and instead water is suppose to go through the top lid and water will be coming out from the side. I figured out the problem already and that was the fan being attached to the motor.