Free .step files for this model are now also available: thangs.com/designer/Let's%20Print/3d-model/Lobe%20Pump%20for%203D%20Printing-68000?manualModelView=true

@squidcaps4308

2 жыл бұрын

Congrats for 100k.

@joshuaobelenusable

2 жыл бұрын

Would you be willing to also post your .f3d file?

@lio1234234

2 жыл бұрын

Do you know what's better for gears than ABS? Nylon! It even self lubricates!!!

@SixOThree

2 жыл бұрын

I kinda want to see the inside of that hardware store! Like especially the fasteners section.

@CUBETechie

2 жыл бұрын

What Programm do you use to construct and 3d printing,?

You can say what you want about resin printing, but those clear solid prints look really fancy, these ones looked like cherry candy

@veryrealperson3694

2 жыл бұрын

resin printing can be much more durable and accurate than fdm, along with being faster, but you gotta do some stuff after it prints

@haraldhimmel5687

2 жыл бұрын

@@veryrealperson3694 Thats interesting. I keep hearing durability is one of the downsides of resin compared to fdm.

@veryrealperson3694

2 жыл бұрын

@@haraldhimmel5687 depends entirely on the resin you are using, most are for detail rather than durability, however some other resins are really strong, just as strong if not stronger than fdm, Zack Freedman used a 5 to 1 mix of tenacious and blu resin from siraya tech, (as in like more blu than tenacious), and it produced some really strong, and accurate prints.

@veryrealperson3694

2 жыл бұрын

@@haraldhimmel5687 just be sure to like clear-coat it or something because the sun will ruin prints for functional parts

@rheller_82

2 жыл бұрын

Just don't eat that cherry candy

Get some TPU filament, it works great for gaskets. Also printed threads can be waterproof and even hold pressure. I printed petg adapter for manometer to measure water pressure in my reverse osmosis and it held 8 bar without leaking during measuring, but it was with ptfe tape.

@ericlotze7724

2 жыл бұрын

Another gasket method can be 3D Printing a “Die” and using that to cut a shape out of a rubber sheet. But as they said above, TPU is great too!

@Zhylo

2 жыл бұрын

Nice pfp

@ericlotze7724

2 жыл бұрын

@@Zhylo Yeah i have yet to pick one oof

My bet with the lid where the holes don't line up is that your hole pattern isn't symmetric. It might work if you flip the lid 180°. Granted I'm doing some solid armchair engineering right now, and I haven't looked at the file in detail either. Thanks for the interesting video!

That's really clever about the offset making sure the gears are lined up correctly!

Never thought I'd see a 3D printed Roots blower

AHH a lobe pump. Great for liquids with bits in used in the food industry they use them for moving products with fruit in as doesn't squash it.

I imagine running the ABS rotors dry with not enough clearance would wear them until there was, perhaps running them with sand. Anyway, the resin is a great solution.

@Eluderatnight

Жыл бұрын

Baking soda followed by vinigar.

All of your water pump designs would make a great addition to a backpack style water reservoir, like used in forest fire suppression. It would make the ultimate water gun.

One interesting pump design you can try is the mazda rx 7 oil pump.

Great job with your videos! You obviously put in a TON of time into the design, builds, filming, editing, etc. Fun, entertaining, and educational. Keep up the great work!!!!

My blood pressure was pretty high,I am fine thanks for asking. 😂😂😂🤣🤣 Love the video dude 😎

It's so impressive that the lobe pump creates an air vacuum at the beginning to pull the water into the pump!

I love how you made the connections between the gears and rotors oof proof with that simple offset trick! Brilliant! Love your videos, and thank you for sharing! Have a wonderful day!

Great job as always... the "elephants foot" is also worse when printing in a transparent resin as more light bleeds through.... I found black does not have as many issues.

Best 3dprinted pump I've seen! Good job!

100K SUBS YAY, LETS GO PRINT

Dude... i live for the day that i will see you make a pump that doesn't leak xD

@LetsPrintYT

2 жыл бұрын

Me too! XD

@sperzieb00n

2 жыл бұрын

​@@LetsPrintYT there is a pump design where a rotor moves rollers over a flexible tube, completely leakless but isn't as great at moving a lot of fluid at once, they're used in dialysis machines.

@joshuaobelenusable

2 жыл бұрын

@@LetsPrintYT You could possibly use an O-Ring Loaded U-Cup Seal on the shafts, they are used in pool pumps and hydraulic pumps for this type of thing.

I swear evey time I come back you are making something cooler.

Wow! Great job as usual; the FDM rotors are awesome!

Put between "impellers" Colgate, and let it run some time than clean it.

@notamouse5630

2 жыл бұрын

Works for gearboxes when I did that. Add lithium grease to mildly smooth the part at the same time. Then clean it thoroughly.

this is such a cool way to make a pump, try adding an apex seal like in a rotary engine for better pressure.

You did possibly the best job that can ever be done in such a projeckt

Cool pump. Maybe the start of a 3D printed water based hydraulic system? Would so love to see that.

Keeping up the tradition of making very leaky pumps I see!

@LetsPrintYT

2 жыл бұрын

Some of this in the world just never change! XD

You may want to look into performing tolerance and flow test prints and making changes such as printing outer walls first in order to get better tolerances.

I've never seen a pump like that before! Very interesting design. Please do current consumption tests per watt to show which design is more efficient. Hope to see more soon.

@tinkeringstuffs6542

2 жыл бұрын

every seen a car with supercharger ? basicly the same, wltho they are longer and have a twisted geomerty wonder what that would do xD i they where spirals xD

@ghostlyninja125

2 жыл бұрын

@@tinkeringstuffs6542 depends on the type, not all are twisted, and theres even centrifugal superchargers which are basically turbos but powered by the engine and not the exhaust. i dare say the twisted geometry of some superchargers, has to do with vibration of the device; and smoothness of air flow, the angle allows for continuous pumping of air as opposed to individual bursts.

Very nice pump project!

Neat design! I'm surprised the FDM printed rotors worked so well. This looks similar to a design used in car super-chargers called a "roots turbo", except not twisted. Did you do that on purpose? It would be cool to see a twisted version, since it has a more continuous output, instead of the pulsed output seen here.

@TheRainHarvester

2 жыл бұрын

I think twisted might not squeeze the water out.

Great video changing the outlet nozzle with a smaller one will make the water go faster and farther

Cool project.... I always add guide pins in my design... Makes setting offsets or timing a breeze. Learned this through designing clocks

100k subs! Well done:)

Ey! Congrats on 100k ❤️

“Sadness happened” - my new term for a mistake, thank you. 😂

Very interesting pump. I guess a downside of this type is contaminants could easily jam the rotors

Congrats on 100k!

White lithium grease is great for lubricating 3d printed gears

I would love to see what the failure point would be if you blocked the flow from the output, like with a garden nozzle on a hose. You earned a sub, great job!

What's about a screw-type pump like used in air compressors? I woul love to see one of these 3d printed!

About the lid. I'm guessing you just flipped it. Try placing the bear ring in the other hole and flip the lid

You are at 100 k congratulations !

Man I love your videos. You are just crazy and like a big kid. It's great.

Congrats on 100k

Awesome work and thanks for sharing the design! Really enjoy you talking through the process of design and testing. #subbed

It seems that you consistently have a problem sealing a rotating shaft to a housing and I want to offer a solution. After disassembling a centripetal pump, I found how the rotating seal worked. It looked like some kind of flange that slides along the shaft but rotates with it. An o-ring sealed the flange to the shaft and a spring would tightly push the flange face onto the housing face. Both the flange and housing had washer-like pieces made of very smooth wearable materials like nylon or Teflon. It might be something to consider looking into replicating.

Börger pumps makes the same design. We use them at waste water trestment plants in Denmark. There are several different models but the most used rotors have two or three “heads”. You could probably check their website for some inspiration

Saying the lobe pump is more complicated than the gear pump (0:46) is right but only true for the construction of such a pump. Gears are inherently hard to design. But they are used so often, that you can just buy pre-designed gears for your needs in comparison for the rotors of the lobe pump. The gear pump has mayor problems, when you try to maximize eather pressure difference or massflow: 1) There is no actual lubrication for the gears except water and none at all when pumping gases like air. Additionally the gears often have a ratio of 1:1, which is very bad for wear. The timing gears on the lobe pump have that too but at least they are well lubricated and you can design them just for the timing in mind. 2) The teeth are at risk of shearing off due to high forces by the fluid pressure. So your pressure difference is constrained. 3) The massflow is greatly constrained because the volume of the chambers is pretty small. Thus you have to increase the rpm which increases the rotor tip speed and such fluid losses and losses in the bearings.

I use shed loads of supports on my resin prints too!

Would you be limited to how long you could make the rotors? If I remember correctly some internal combustion engines use lobe pumps for the “Superchargers”, they tend to be very long so that may provide even more flow for the same pump!

@Charles206

Жыл бұрын

yes you are correct superchargers use the exact same design known as a root supercharger

Fantastic! How small of a motor could be used? I want a 12v 1A pump that'll pump around 25 to 35' high (in a pipe).

You unintentionally made a supercharger 😂😂

I print like that on my resin printer almost all the time. I have a wham bam plate and I got rid of the elephants foot by doing -.6mm in the first later compensation setting thing in lychee.

Always enjoy your videos, might use this for a handheld pressure washer.

I would love to see you implement TPU gaskets in to your designs. The leaks might be a thing of the past if you do!

Nice work

If you used different materials for the lid and the housing, they may have shrunk different amounts after printing and thus were not the same size.

@gigigigiontis8

2 жыл бұрын

For the leaks: look into lip seals

@merlin_V2

2 жыл бұрын

My guess ist the cover was rotated 180° by accident.

7:46 That happened to me once. I'm pretty sure it was because I didn't let the print cool before pulling it off the print bed and it warped it just slightly.

I could see using this for an almost all 3D printed hydroponic setup. 😉

Maybe print the two parts who's holes didn't line up such that they are oriented the same way on the print bed. That way any non squareness will be equal on both.

The links for the 775 and 895 motors that you used for this project shows site can't be reached but I can search for the motors. I thought I'd let you know.

Shoulda used tech blu resin mixed with esun hard tough for the wear parts!

Hey nice monitor man!

For the leaks, look into lip seals

Would “threaded inserts” be good for the bolts at ~3:58?

@ericlotze7724

2 жыл бұрын

Making a 3D Insert Press could also be a video in of itself!

it looks preaty well. Did you measure the pressure?

The tolerance has to be very tight when an 895 DC motor can't run it. That thing has a shit ton of torque

Been a long time sub. Love your content

@LetsPrintYT

2 жыл бұрын

Thank u!! It's great to hear! ;)

Doesn't put a seal on the shaft and is surprised to see water leaking around the shaft? What did you think was going to happen?

I use Pentel markers! So cool.

Well done!

That thing works like a Roots super charger but instead of air it uses water .....Looks good , hope it did a wine

Perfect 💞💞💞

If you scale on the Z and increase the height of the lobes 10X to 100X could you turn the pump into a water cannon?

2:52 look at captions😳

@isaacaugusto5646

2 жыл бұрын

😏

Facinating

try Archimedes screw pump, shrouded

@Jkauppa

2 жыл бұрын

ducted in a pipe, I mean

I wonder what would happen if your Inlet was slightly bigger

Actually PLA is way way way better for gears as it is self lubricating and runs much cooler.

I think I see another high-pressure hose video coming soon :)

I have never seen this type of pump before, how does it compare to a simple impeller pump?

@blubug768

2 жыл бұрын

this is a positive displacement pump, it flows a constant volume no matter the outlet pressure or it explodes trying.

Can you make a side channel water pump next

The reason for not fitting holes for screws may be are they in symmetry? Because if not you may just rotate the cover...

good friend greetings for your videos I wanted to comment if there is a book of design and calculation of this type of pumps?

7: 40 Did you put the lid on upside down maybe?

Im interested that how much pressure your pump can do... measure it!

They arent driven independently if they are geared together and driven from a single input

PLEASE make a roots style supercharger/water pump

Nice

Water is indeed compressable. You would need an insane amount of Force to complete this though

Everytime I see it I just have to say: I love my QIDI X-Plus! :)

@LetsPrintYT

2 жыл бұрын

X-Plus is absolutely amazing printer. I have used this in every project after I got this printer. I recommend this printer for absolutely everybody especially when you need to print with a bit serious filaments like CF-PA, PC.... ;)

@OZtwo

2 жыл бұрын

@@LetsPrintYT If interested I have made a Logitech 920 camera mount for this printer which fits on the very front and flips up to open the door....

almost ar 100 supbs lets goooooooo

You dont fear of rust of the bearings inside pump?

instead of using a drill use one of your 3d printed engines to run it!!!!!!!!!!!!! great idea would love if you would do it

water bump. i like how you say it

Fix that leak and throw an induction motor there or a brushless out runner motor i want to see what it can achieve

I see 100 000 subscribers exactly.

❤️

My Bloodpressure was pretty high Thank you for asking i'm fine 😂😂

Nylon rotors next time 👍

skew on your 3d printer causes the lines to not line up