**=** Wow, now make it in metallic for big fire fighting pump concept to extinguishing forest fire! ^^ Like this: th-cam.com/video/9Nqcc3yTbMY/w-d-xo.html I suggest also gear to bigger, and K'Nex shape gear like, idk. Batman, lol!
Could you increase the efficiency if you printed some gaskets using TPU? It feels like if you made a small fin/wiper blade and set it at the right angle, you could eliminate most of the backflow around the edges. It would probably introduce some parts wear into the equation but you can always print out additional gaskets as they wear out.
I was planning a project with a mate and a decent waterpump was a big issue we were looking into....then this got suggested to me Quality work mate, definitely won me over; thanks again
@@nsboost the rx7 pump wasnt going for volume either. Mazda was trying to get good pressure to oil everythingin the engine. It being a rotary there are nearly twice a many moving parts compared to a normal engine, with the apex seals, the ecentric shaft, rotors, side seals, and corner seals, all of the seals moving up and down basically 3 times for every one revolution, it need oil delivery fast. At that point volum doesnt matter as long as its getting oil. I do admit rx7 oil pumps do move a fair amount of oil too though.
The advantage of this lobe design is the lobes can have more clearance so you can have wider tolerances. The volume of water on the outside is far greater than the space in the middle, making the forward pressure far greater than back pressure. I was happy in the last video when you said you were moving to this design.
i would actually love if you were to benchmark them in a few ways and compare them in things like static pressure flow rate or maybe even a plot pressure vs flow or something like that ... but comparing the designs and maybe even trying to improve them
The whole benefit of having much longer gaps at the housing nullified by the very bad gaps at the profile engagement. It is true that a longer gap decreases the leakage flow. But with this design the profile engagement gap not only is much shorter there even is a dead volume being transported from high to low pressure like you can see at 2:06.
how about a rubber sheet to use as a gasket instead of silicone? it'd be easier to take apart, and can be reused if you're using the same housing again. have you thought of trying a screw pump?
It would be cool if you could test both pressure and flow, because those are very different and different pumps have different flow/pressure ratios. Just because the water doesn't spurt out as far which you deem as "performance", doesn't make it a bad pump. It just has low flow and possibly high pressure.
You worried about the leak from lobe-casing contact so you create a wing shaped rotor to maximize rotor-casing surface contact. By doing that you reduce the rotor-rotor contact (in the middle), which is more important because the gap was pushed into the inlet.
Have watched a number of your water pump videos, just hoping you will read this comment. I'll suggest looking into iglidur as a material and iglidur filament, the FDM printed gears will benefit greatly from a material swap, you can just print the infill in another cheaper material if you have a multi-material printer. It will generate a lot less friction and yielding better overall
This video randomly popped in recommendations. Thought what the hell, was impressed with what i saw, then i notice you were using Ryobi tools. Oh the humanity!
It’s a pretty standard waukesha sanitary pump design and they have issues getting primed if there is significant wear between the rotator and housing The clearance will generally become the size of the biggest abrasive particle it’s pumping
I was puzzled as to why the wingless on performed better, and it seems to me that the front wings force the water backward at the end of each cycle. Eliminate the leading wing, and you may be onto something.
I believe the overlapping wings create a "dead zone" between them that uses the liquid to help seal the pump. if you don't have that geometry the pump may not seal on the high pressure side, which can lead to lower efficiency as it leaks pressure to the low pressure side.
Use thousands of dollars of equipment to manufacture a pump of unknown head, capacity, lifetime, efficiency, that you could probably buy for less than $100. Winning!
The best quality I have ever seen yet his print literally literally looked like garbage. That was definitely a promo for that machine. You really need to fine tune your 3D printing skills dude.
I understand your pain , what a wonderful world would it be if we could just 3D print a sturdier material , like man the amount of time saved and the progress that makers would make would be INSANE …… fever dreams 😢
Have a look at the old Johnson IC30 or new Wright pump MP range. Tri lobe or bi-wing lobe. Look at the gearbox side. Try an additional set of gears further back in that "empty cavity" you have. it will balance your shafts and give more stability at the end of the lobes. At high speed your lobes will be moving up and down with such a thin shaft. Just a thought. Excellent work, love the pump vids!! (also, max rpm for any lobe pump should never exceed 850 rpm at the lobes)
I've been paying attention to your vids for some time. Ur awesome ! I'm also obsessed with pumps. Your CGI animation & description of why lobe pumps work was REALLy cool. Perhaps I can add to the understanding of why pumps pump. I'm hoping to expand your understanding & it might help you to make even better designs. The notion of flow between high and low pressures is correct, but it is less relevant here. It is less relevant because water is not very compressible. Ancient man would say water is not compressible... Thus, when we think of water pumps and the reason they pump, I like to think of it like ushering the water. Escorting the water. Pushing the water. Think of it like chambers which change shape. The changing of shape means the water will flow when the volume space is altered. In the lobe pump, the changing of volume occurs when(in the middle) one lobe enters the space. When the lobe enters the space which has water in it the water is pushed out. When the lobe leaves the gap, water goes in to fill the gap. The gap is the space in between the gears... or in between the lobes... Hopefully this gets your mind gears turning... Your mind lobes, lobing... -Cheers
Test this as a hydraulic motor. You use a hose to put pressurized water into it, and the shaft turns. Also, test the pumps ability to raise water to a higher level. Connect a hose to the pump outlet when it is in pump mode (as shown) and raise the hose outlet to the roof of a house and see if it will lift water to approximately 20 feet.
I was surprised that the water actually goes around the outside edges of the blades inside the chamber rather through the middle of the two blades for a straight shot through the middle of the chamber. Edit: I just read someone else's comment saying it's basically because if you were to run it so the blades push from the middle instead of the outside edges, the two blades would be slamming water from the outside edges of the chamber (with more volume of water behind them) right BACK into the inlet and causing more back pressure than forward pressure
Try an aviation fuel pump style which are rated for 2-500 gph. It has off center cage that uses a solid front and rear bearing the impeller consist of rotor, blades, and center pin which have tolerances but move in eccentric fashion to pump. Bearing are center but cage is off center so when the blade reaches the close tolerance side in compresses. 4 blades are necessary.
Nice Design. I would love to print those things, too, but i don't have a printer. As you get sponsored very well, i kindly ask you for a spare printer of yours, which you don't have any more space left for at your home. I would take care for it very well...
You should have already designed a symmetrical gear set where the number of teeth are divisible by 4 and align the four mounting holes in a simple square in a way that the holes would line up with the peaks and valleys, alternating. This way, you wouldn't need different design for the gears, nor the rotors, you just have to mount whichever one 90 degrees off. Second: shaft seal: Isn't there any rubber + spring type seal there? I don't know it's proper English name, I've seen them mentioned just as shaft seal everywhere... Those press-fit things like bearings. It'll provide better seal with magnitudes lower friction than O-rings. Lid seal: Just use rubber sheet or big O-ring with a groove, but even when you just use sheet gasket, it would improve the seal if you add grooves to the lid and matching "bumps" the other part. The rotor clearance can depend on the gasket thickness which is good and bad, it depends. Bad, because you have to set the clearance, good, because you can set it. If you don't want that, rather print exactly sized parts, then just don't use the flat surface to seal but create a taller housing and a lid that slides into that, then use the circumfence of the inner step instead for sealing with an O-ring in a groove. I'd like to mention that for an O-ring groove it is better to use square profile, not round. The rubber has to go somewhere when you compress it, and if you use a square profile there will be 4 corners for that so you can make a quite tight fit while still be able to assemble it.
So Gear pump has small teeth on gears so displacement is low, but lobe pump has high displacement but a small seal around the outer case Bat wing rotors look as thou there is now a small area to seal at the point of the 2 rotors that meet in the middle ? what about a gerotor or rotor pump ; inner gear with an outer gear , only using larger lobe design for increased flow ?
what about using camshaft or crankshaft gears from a car instead? i feel like they'd give you a lot less resistance to make it spin faster and move more fluid
That's a huge pump and gearbox for the result. Lots of friction losses too. I think you would be much more gratified with the results from building a multi stage axial flow pump or centrifugal multiple stage, Gear pumps are generallt reserved for low flow with good sealing. Hydraulic industry. They require considerably higher precision. If you really want to do it, make the pump smaller and the synchronising gears bigger. Use lots of supports and do the housing as resin printed too. The bi-wing pump lacks sealing of the meshing interface from reverse flow so you loose a lot of pumping volume per rotation passing the wrong way. Vane pumps are another option, also a couple variants on those I invented about 30 years ago. I 3D printed a housing a while back but haven't finished it off. Too many other projects...
Would this desing work as a type of positive displacement supercahger for an internal comustion engine ? Or maybe you should use a twin screw supecharger design for a pump !
this is exactly how super chargers work, but the lobes are spiraled to mesh together better. IN other words, this is a fluid pump and air (and water) is a fluid.
Why not use a pressure gauge? You could stick one on the end to check the pressure of each design, more scientific than how far it shoots. Cool design.
It would be interesting to see what a piston hydraulic pump gear would do compared to a Marzocchi pump gear like they use on the lowriders to make them hop.
32M^3 pound pump that my neighbour throwed away, work like.. 32m^3h with a 52mm diameter... i was kinda here to see some presure test.. how much water height?
Aumentarle el diámetro de entrada y salida del caño, son más de caudal esas bombas y a su vez tienen una válvula con resorte para hacer bypass entre la salida y retorno.
You can download this model FOR FREE: thangs.com/designer/Let's%20Print/3d-model/Bi-Wing%20Lobe%20Pump-107972?manualModelView=true
**=** Wow, now make it in metallic for big fire fighting pump concept to extinguishing forest fire! ^^
Like this: th-cam.com/video/9Nqcc3yTbMY/w-d-xo.html
I suggest also gear to bigger, and K'Nex shape gear like, idk.
Batman, lol!
set more fill rate on the part....
Could you increase the efficiency if you printed some gaskets using TPU?
It feels like if you made a small fin/wiper blade and set it at the right angle, you could eliminate most of the backflow around the edges. It would probably introduce some parts wear into the equation but you can always print out additional gaskets as they wear out.
Maybe you should add some oil in your gearbox and make gaskets to keep the pump from leaking
I was planning a project with a mate and a decent waterpump was a big issue we were looking into....then this got suggested to me
Quality work mate, definitely won me over; thanks again
One interesting pump design you could try ist the mazda rx 7 oil pump sesign. It should create a very high pressure.
Volume is more desirable than pressure in this application. And volume and pressure are two different things
@@nsboost listen to the guy with the lagunita
@@nsboost the rx7 pump wasnt going for volume either. Mazda was trying to get good pressure to oil everythingin the engine. It being a rotary there are nearly twice a many moving parts compared to a normal engine, with the apex seals, the ecentric shaft, rotors, side seals, and corner seals, all of the seals moving up and down basically 3 times for every one revolution, it need oil delivery fast. At that point volum doesnt matter as long as its getting oil. I do admit rx7 oil pumps do move a fair amount of oil too though.
This pump shares similar principles to a rotary engine tho
Yay I managed it to have the most liked coment on this video. Thanks to all the people that liked it.
You really stepped up your editing game, humor is on point as well
The advantage of this lobe design is the lobes can have more clearance so you can have wider tolerances. The volume of water on the outside is far greater than the space in the middle, making the forward pressure far greater than back pressure.
I was happy in the last video when you said you were moving to this design.
i would actually love if you were to benchmark them in a few ways and compare them in things like static pressure flow rate or maybe even a plot pressure vs flow or something like that ... but comparing the designs and maybe even trying to improve them
The whole benefit of having much longer gaps at the housing nullified by the very bad gaps at the profile engagement. It is true that a longer gap decreases the leakage flow. But with this design the profile engagement gap not only is much shorter there even is a dead volume being transported from high to low pressure like you can see at 2:06.
This channel will pump you up!
Gratz on 100k subs.
the editing and comedy are great. You've come a long way and I am glad to see your channel has grown to the extent it has, keep up the good work.
how about a rubber sheet to use as a gasket instead of silicone? it'd be easier to take apart, and can be reused if you're using the same housing again.
have you thought of trying a screw pump?
RTV would be easier
It would be cool if you could test both pressure and flow, because those are very different and different pumps have different flow/pressure ratios. Just because the water doesn't spurt out as far which you deem as "performance", doesn't make it a bad pump. It just has low flow and possibly high pressure.
I’m glad the wing love pump came out! I’m so proud of them
Looks like a good volume of water coming out :) I am curious what happens when you add a small nozzle, like a power washer.
That's one part of his lawn that'll never be dry again
You worried about the leak from lobe-casing contact so you create a wing shaped rotor to maximize rotor-casing surface contact. By doing that you reduce the rotor-rotor contact (in the middle), which is more important because the gap was pushed into the inlet.
Greetings from America; I love your dry sense of humor
Have watched a number of your water pump videos, just hoping you will read this comment.
I'll suggest looking into iglidur as a material and iglidur filament, the FDM printed gears will benefit greatly from a material swap, you can just print the infill in another cheaper material if you have a multi-material printer. It will generate a lot less friction and yielding better overall
This video randomly popped in recommendations. Thought what the hell, was impressed with what i saw, then i notice you were using Ryobi tools.
Oh the humanity!
It’s a pretty standard waukesha sanitary pump design and they have issues getting primed if there is significant wear between the rotator and housing
The clearance will generally become the size of the biggest abrasive particle it’s pumping
I was puzzled as to why the wingless on performed better, and it seems to me that the front wings force the water backward at the end of each cycle. Eliminate the leading wing, and you may be onto something.
I agree, that is definitely a point where extreme high or low pressure and turbulence could happen.
I believe the overlapping wings create a "dead zone" between them that uses the liquid to help seal the pump. if you don't have that geometry the pump may not seal on the high pressure side, which can lead to lower efficiency as it leaks pressure to the low pressure side.
too much friction loss on this one. Sealing the internal parts is pointless when all you need to do is seal the outer casing.
Use thousands of dollars of equipment to manufacture a pump of unknown head, capacity, lifetime, efficiency, that you could probably buy for less than $100. Winning!
Gracias por invitarnos a tu hogar.. I really appreciate it.. Greetings from Costa Rica, your videos are simply awesome..!!
Have you thought about gear lubrication? Using a light weight oil should help out a bit.
The best quality I have ever seen yet his print literally literally looked like garbage. That was definitely a promo for that machine. You really need to fine tune your 3D printing skills dude.
The fly at 11:01 was so close to being obliterated
Pcbway, that's a helpful company to know about.
I understand your pain , what a wonderful world would it be if we could just 3D print a sturdier material , like man the amount of time saved and the progress that makers would make would be INSANE …… fever dreams 😢
i love the classic editing of the video's... brings me back to the 2017golden age of youtube ❤
You should use radial shaft seal with grease like in washing machine, and also two bearings for each shaft - on both sides of gears.
Animations, script and effects were hilarious! :D
You should try an impeller pump next, they're much more forgiving to build and can still generate some decent pressures.
Did you see the "magic smoke" coming from the Motors at the end :-D?
Congratulations on 100k subs! I’ve learn many things from you about 3d printing. Keep up the great work!
It's looking so good !
Have a look at the old Johnson IC30 or new Wright pump MP range. Tri lobe or bi-wing lobe. Look at the gearbox side. Try an additional set of gears further back in that "empty cavity" you have. it will balance your shafts and give more stability at the end of the lobes. At high speed your lobes will be moving up and down with such a thin shaft. Just a thought. Excellent work, love the pump vids!! (also, max rpm for any lobe pump should never exceed 850 rpm at the lobes)
I got to you the best idea ever, copy the fan showdown but for waterpumps, people loves to participate
6.2.1 is good for X-Plus now and you will love the supports!!!
Congrats with your subscribers count, let me bump that number one higher for ya.
I've been paying attention to your vids for some time. Ur awesome ! I'm also obsessed with pumps.
Your CGI animation & description of why lobe pumps work was REALLy cool. Perhaps I can add to the understanding of why pumps pump. I'm hoping to expand your understanding & it might help you to make even better designs.
The notion of flow between high and low pressures is correct, but it is less relevant here. It is less relevant because water is not very compressible. Ancient man would say water is not compressible... Thus, when we think of water pumps and the reason they pump, I like to think of it like ushering the water. Escorting the water. Pushing the water. Think of it like chambers which change shape. The changing of shape means the water will flow when the volume space is altered.
In the lobe pump, the changing of volume occurs when(in the middle) one lobe enters the space. When the lobe enters the space which has water in it the water is pushed out. When the lobe leaves the gap, water goes in to fill the gap. The gap is the space in between the gears... or in between the lobes...
Hopefully this gets your mind gears turning... Your mind lobes, lobing...
-Cheers
I think you must try sliding vane pump. Just this type is good, but needs a lot of power.
That printer is insane
the editing is insane my guy
Hahaa, ma teadsin et eesti aktsent (kuni lõpus YT statse näitasid) :)
Lahe video, pull kanal, ei teadnudki varem su tegemistest midagi, subscribed!
ma otsisin seda kommentaari XD
Test this as a hydraulic motor. You use a hose to put pressurized water into it, and the shaft turns.
Also, test the pumps ability to raise water to a higher level. Connect a hose to the pump outlet when it is in pump mode (as shown) and raise the hose outlet to the roof of a house and see if it will lift water to approximately 20 feet.
I was surprised that the water actually goes around the outside edges of the blades inside the chamber rather through the middle of the two blades for a straight shot through the middle of the chamber.
Edit: I just read someone else's comment saying it's basically because if you were to run it so the blades push from the middle instead of the outside edges, the two blades would be slamming water from the outside edges of the chamber (with more volume of water behind them) right BACK into the inlet and causing more back pressure than forward pressure
Did not expect to see you here lol
Voids in the return cycle is causing the efficiency to drop. Forcing some of the water to recycle through the pump.
Oh boy! At 10:00 he turns into a savage! Awesome 🤟
amazing video editing. bravo.
Try an aviation fuel pump style which are rated for 2-500 gph. It has off center cage that uses a solid front and rear bearing the impeller consist of rotor, blades, and center pin which have tolerances but move in eccentric fashion to pump. Bearing are center but cage is off center so when the blade reaches the close tolerance side in compresses. 4 blades are necessary.
i use these pumps all the time at work
Best video yet
great video! by the way 2Ah and 5Ah batteries are the same power. only 5Ah have more capacity
You should connect a flow meter and pressure gauges to all of your pumps so you can compare the true performance of each type!
11:32 Magic smoke is starting to appear.
10:25 😂what did that go-pro do to deserve such a waterboarding 🤣
WAAARRRRBBBLLGRRRBLLL
- that gopro, probably
I totally clicked on this because of the cool pump lobes in the thumbnail.
Netflix: "Are you still watching?"
somebody's daughter: 10:15
Nice Design. I would love to print those things, too, but i don't have a printer. As you get sponsored very well, i kindly ask you for a spare printer of yours, which you don't have any more space left for at your home. I would take care for it very well...
I know this isn't really in the scope of this channel but you should get a CNC and make stuff like this out of aluminum (or print a CNC?)
Keep up that broken English humour. It’s on point and very entertaining.
Congrats, very clever, love your channel 😎
I would love to see what kind of pressure these plumps can generate
Out of a 1-2 mm nozzle and static could be cool for a simple hydraulic arm
If the butterflies had supporting bearings on the cover plate it would make it more stable 👍👍
You should have already designed a symmetrical gear set where the number of teeth are divisible by 4 and align the four mounting holes in a simple square in a way that the holes would line up with the peaks and valleys, alternating.
This way, you wouldn't need different design for the gears, nor the rotors, you just have to mount whichever one 90 degrees off.
Second:
shaft seal: Isn't there any rubber + spring type seal there? I don't know it's proper English name, I've seen them mentioned just as shaft seal everywhere... Those press-fit things like bearings. It'll provide better seal with magnitudes lower friction than O-rings.
Lid seal:
Just use rubber sheet or big O-ring with a groove, but even when you just use sheet gasket, it would improve the seal if you add grooves to the lid and matching "bumps" the other part.
The rotor clearance can depend on the gasket thickness which is good and bad, it depends. Bad, because you have to set the clearance, good, because you can set it.
If you don't want that, rather print exactly sized parts, then just don't use the flat surface to seal but create a taller housing and a lid that slides into that, then use the circumfence of the inner step instead for sealing with an O-ring in a groove.
I'd like to mention that for an O-ring groove it is better to use square profile, not round. The rubber has to go somewhere when you compress it, and if you use a square profile there will be 4 corners for that so you can make a quite tight fit while still be able to assemble it.
All ways fun videos to watch, Love how as the video images of the pumps fade you see smoke from the gear box.lol
Great video!
I think I have a new pump design. I'm not sure, though. It's radial to radial. I have tested, and it works.
I love the design, but in the center of the pump where there is a gap, it will create a compression that will reduce the pump speed.
its everytime nice to see your pumps :-D maybe you can make longer videos with some use case of your pumps
Well, it seems like what extra sealing you get whit those wings. You kind of loose to the space in between the rotors.
What's about a screw-type pump like used in air compressors? I woul love to see one of these 3d printed!
So Gear pump has small teeth on gears so displacement is low,
but lobe pump has high displacement but a small seal around the outer case
Bat wing rotors look as thou there is now a small area to seal at the point of the 2 rotors that meet in the middle ?
what about a gerotor or rotor pump ; inner gear with an outer gear , only using larger lobe design for increased flow ?
Lobe pumps are usually used for pumping oil, other liquids damage the pump prematurely!
Also what is the brand of the green soldering iron?
i like ur style of doing things
100k! Woo-hoo!! 😁
what about using camshaft or crankshaft gears from a car instead? i feel like they'd give you a lot less resistance to make it spin faster and move more fluid
Hell yeah! great job on this
seeing u going ham at those bearings with a hammer😢
How much pressure does it make? Can you make a Supersoaker out of it?
nice project!
To have a convenient comparison, importanant factors need to be measured like: voltage, current, water flow and head
Such an awesome video. Exactly the type of inspiration I need to start doing this stuff myself!
I think its better the first one on the intro 0:47 bc you dont need to fill it with water before it sock it the water out
11:34 was the pump really smoking?
Congrats on 100k! Love your content and playful attitude :D keep printing!
Is the animation backwards? Because the shots of the physical unit are going the opposite direction... 🤔
That's a huge pump and gearbox for the result. Lots of friction losses too. I think you would be much more gratified with the results from building a multi stage axial flow pump or centrifugal multiple stage, Gear pumps are generallt reserved for low flow with good sealing. Hydraulic industry. They require considerably higher precision. If you really want to do it, make the pump smaller and the synchronising gears bigger. Use lots of supports and do the housing as resin printed too. The bi-wing pump lacks sealing of the meshing interface from reverse flow so you loose a lot of pumping volume per rotation passing the wrong way. Vane pumps are another option, also a couple variants on those I invented about 30 years ago. I 3D printed a housing a while back but haven't finished it off. Too many other projects...
I am not paid to say this but Damn that thing pumps 😂😂👍
what do you do with the old plastic because it seems like a lot of waste I never owned a 3D printer before one of the day I love to get one
Would this desing work as a type of positive displacement supercahger for an internal comustion engine ? Or maybe you should use a twin screw supecharger design for a pump !
this is exactly how super chargers work, but the lobes are spiraled to mesh together better.
IN other words, this is a fluid pump and air (and water) is a fluid.
Thanks for showing me that bambu printer! Seems like a very high grade machine :)
Why not use a pressure gauge? You could stick one on the end to check the pressure of each design, more scientific than how far it shoots. Cool design.
"short story long" also "shit story short" -This adequately describes my life . Lmao I love this dude.
(╯°Д°）-o--|===> /(.□ . \)
Does it work in reverse?
It would be interesting to see what a piston hydraulic pump gear would do compared to a Marzocchi pump gear like they use on the lowriders to make them hop.
Your motor is spinning counter clockwise towards the inlet
Try turning it clockwise towards the outlet should be more powerful that way
Apparently each piece was printed in a different printer
That camera in stream of water, would be cool if it was livestreaming. 😏
32M^3 pound pump that my neighbour throwed away, work like.. 32m^3h with a 52mm diameter... i was kinda here to see some presure test.. how much water height?
so which of those pumps is self priming and both direction and which moves most fluid?
Aumentarle el diámetro de entrada y salida del caño, son más de caudal esas bombas y a su vez tienen una válvula con resorte para hacer bypass entre la salida y retorno.