DIY syphon nozzle

[Chug]

The danfoss oil pump you won is the same as the ones on my burners, as Julian says it has a solenoid to let fuel to the outlet, but you should be able to wire it direct to mains to test, if it doesn't work then you can remove it and screw a bolt in the hole instead.

I'm not sure what they will be like with wvo or glyc or engine oil  but for bio or diesel they work great.

[Tony]

Thanks for the info, I probably wouldn't have figured that out.  Only one way to find out how well it works

I have a variac so should be able to turn the flow up and down with that, if the bypass doesn't deal with that for me.

[Chug]

On some Danfoss pumps you can increase the pump pressure by turning an allen screw on the front of the pump body, but looking at the pic of yours it doesn't look like it has one, unless it is on the side below the bleed screw like some have..

But bypassing the solenoid on mine sends it into lockout mode after 20 secs, so the control box must sense that the solenoid isn't there, but running it without a control box like you will be then it should be ok.

see my post here
http://www.biopowered.co.uk/forum/index.php/topic,2607.msg33157/topicseen.html#msg33157

[oakwoodtv]

Tony was it you that wanted an electric power steering pump
 have one of a Peugeot 106 foc. 

[Tony]

Yes, thank you - but I should see if this oil boiler pump does the job before taking you up on your kind offer

[Tony]

The boiler pump arrived, but I'm confused.  It has a driveshaft shaft protruding with a flat side - I take it that this is where there would normally be a drive motor?

[Chug]

Yes the driveshaft attaches to the motor, and there will be two allen screws on the pump one for bleeding fuel, one for pump pressure, pressure adjustment one usually has plus and minus signs next to it.

[Tony]

Ah yes, gotcha on the pump pressure adjustment.

Been peering at eBay but can't find a motor - don't really know what to look for though!

[Chug]

you want a motor from from an electro oil burner like these, usually 90watt and others like bentone and riello and eogb may fit.

http://www.ebay.co.uk/itm/OIL-PUMP-MOTOR-FOR-TRIANCO-20-25-OIL-FIRED-BOILER-IN-FULL-WORKING-ORDER-/291504581473?pt=LH_DefaultDomain_3&hash=item43df06eb61


http://www.ebay.co.uk/itm/90W-240V-Motor-for-Bentone-Oil-Burner-B11B-etc-/151752329143?pt=LH_DefaultDomain_3&hash=item235524c7b7

http://www.ebay.co.uk/sch/i.html?_odkw=MOTOR+FOR+OIL+FIRED+BOILER&_osacat=0&_from=R40&_trksid=p2045573.m570.l1313.TR0.TRC0.H0.X90+watt+MOTOR+FOR++BOILER.TRS0&_nkw=90+watt+MOTOR+FOR++BOILER&_sacat=0

[therecklessengineer]

Those oil burner motors also drive the fan.

You could hook it up to any old motor - a small DC device would be the easiest I'd imagine. An old power drill would probably be the easiest.

[Tony]

Thanks for the pointers!

I'm sure this will seem trivial to you seasoned machinists, but tonight I successfully drilled and tapped a 316 stainless endstop to mount the nozzle in

My poor centre punch though, it just blunted up against it, so consequently, the hole isn't quite in the middle 



Ordered new end stop and better (hopefully) centre punch!

[julianf]

Tony,

I tried to reply before, but, for some reason, this forum now crashes my phone every time i try to reply...

Anyhow,

Jules had some issue with the gear pump on his burner, trying to run split FFAs.  I cant recall the exact detals, but it was along the lines of HMPEs (or their equivalents) blocking the internal gauze on the pump, and then the seals breaking under suction - or somthing like that anyhow.

So, the gear pump may not do you for that long when trying to pump more viscous stuff.  It may be fine for years, but jules's just didnt seem to last that long.

And, as above, i can confirm that they are driven by the same motor that does the fan.  Its not variable speed, so you should be able to work out the rpm easy enough (i dont know how many pole, but it must be written somwhere)

[Tony]

I've won a motor on eBay (a good deal by all accounts as it's brand new, but still more than I wanted to spend, IE it wasn't less than a tenner!)  Thanks Chug and Julian for the pointers.

I'm a little concerned about what you say about seals and suction, so if I can find the gauze, I'll remove it.  It's not like it will be spraying clean liquid through a fine aperture, just delivering it to the windy bit of the nozzle.  Though I do need to figure out what on earth all the ports and hangy-off bits do.  Is there a page that has general knowledge on how these oil burners normally hang together?

[julianf]

I think i said - look at the danfoss manual.  Pretty sure there's exploded diagrams.

There are things like - if you fit a certain part inside, it either returns excess fuel to the tank (loop) or keeps it in the pump.  One obviously bleeds, and the other is a pain.

...but that may be irrelevant, considering your application, anyhow.

The ports will be in, return, then the allen key one for the pressure, and the solenoid with reed valve thing.
Oh, and the outlet of course.

[julianf]

http://heating.danfoss.com/pcmpdf/dkbdps000a802.pdf

i think pg55, but look at the other ones also, as im not sure that "L3" is the same as "Type 3"