Thingiverse
Water pump / Water ejector V2 / eductor / venturi by OilMajor
by Thingiverse
Last crawled date: 4 years, 7 months ago
This is the 3d printed water driven eductor.
If you need capacity ratio 0.8 : 1 (0.8 part of driven water to 1 part of sucted water) - reduce nozzle diameter to 1 mm. But same way you will reduce pumping capacity. If you need so - post comment and I will add corrected STL model or print out current and insert into the nozzle small piece of pvc or ptfe pipe outer dia 3 mm, inner 1-1.5 mm.
IMPORTANT: need to create delivery head backpressure / backflow if you are using water to drive it, i.e.:
1) connect hose 20-30 cm to delivery end, OR
2) close 75-80% delivery end (by finger, plug, etc), OR
3) insert any screen or partition inside delivery end 1 cm in deep, OR
4) put eductor delivery end into the water at least 2 cm in deep (sometimes just touch water surface).
Venturi V1 (black on picture, STL file name "Venturi"): just testing model, but it also works.
Venturi V2 (yellow on picture, STL file name "Venturi V2"): upgraded model with better characteristics:
Suction ratio: 1.5:1 (1.5 parts of driven water required for 1 part of sucted water)
Suction capacity: 200 ltrs/hr @ driven water pressure abt 2.0 bars from 0.5 m suction head.
Maximum suction head: 10 mtrs of water @ 1.8 Bars of driven water pressure
Bonus:
To test it in your shower room you can find "Shower reducer" STL file - just connect it instead of shower head to shower flexible hose + use 10 cm of garden hose for eductor connection (find picture for reference).
PRINTING:
PLA was used for printing, ROTATE STL model VERTICALLY, delivery end to top.
For V1 add support (touching bedplate only) - it's for suction pipe.
For V2 no need any supports - print vertically, delivery end to top. Layer height 0.2 mm, nozzle 0.4 mm, 100% fill density.
Shower reducer to be printed vertically, thread to top - for better results, layer height 0.2 mm, 100% density.
With 100% fill density, fillament consumption 30 grams (9.7 mtrs of 1.75 mm).
Driven water inlet fit for garden hose.
If you need capacity ratio 0.8 : 1 (0.8 part of driven water to 1 part of sucted water) - reduce nozzle diameter to 1 mm. But same way you will reduce pumping capacity. If you need so - post comment and I will add corrected STL model or print out current and insert into the nozzle small piece of pvc or ptfe pipe outer dia 3 mm, inner 1-1.5 mm.
IMPORTANT: need to create delivery head backpressure / backflow if you are using water to drive it, i.e.:
1) connect hose 20-30 cm to delivery end, OR
2) close 75-80% delivery end (by finger, plug, etc), OR
3) insert any screen or partition inside delivery end 1 cm in deep, OR
4) put eductor delivery end into the water at least 2 cm in deep (sometimes just touch water surface).
Venturi V1 (black on picture, STL file name "Venturi"): just testing model, but it also works.
Venturi V2 (yellow on picture, STL file name "Venturi V2"): upgraded model with better characteristics:
Suction ratio: 1.5:1 (1.5 parts of driven water required for 1 part of sucted water)
Suction capacity: 200 ltrs/hr @ driven water pressure abt 2.0 bars from 0.5 m suction head.
Maximum suction head: 10 mtrs of water @ 1.8 Bars of driven water pressure
Bonus:
To test it in your shower room you can find "Shower reducer" STL file - just connect it instead of shower head to shower flexible hose + use 10 cm of garden hose for eductor connection (find picture for reference).
PRINTING:
PLA was used for printing, ROTATE STL model VERTICALLY, delivery end to top.
For V1 add support (touching bedplate only) - it's for suction pipe.
For V2 no need any supports - print vertically, delivery end to top. Layer height 0.2 mm, nozzle 0.4 mm, 100% fill density.
Shower reducer to be printed vertically, thread to top - for better results, layer height 0.2 mm, 100% density.
With 100% fill density, fillament consumption 30 grams (9.7 mtrs of 1.75 mm).
Driven water inlet fit for garden hose.