[AT] OT--foam marker for sprayers

[John Maddock]

JT

you wrote:

"Small solenoids aren't cheap",

Suggest you look for garden irrigation solenoids.  I routinely supply
solenoids marked 24v AC & power them with 12 v. DC.  Work fine.

Here, they cost < $20 retail.

JV


> I saw plans, but I've never tried this.  They used a plastic fuel can, a
> fish tank air stone, small air pump and the foam mix to make a marker. 
> This made the foam in the fuel can and just used a 3/4" or so hose to run
> to the end of the boom, then it expanded to a 2" or so nozzle to make
> larger foam blobs.  I've considered making one, but lacked
> "A-Round-Tuit".....
>
> Len Rugen
>
> rugenl at yahoo.com
>
>
>
>
>      On Saturday, January 10, 2015 7:39 AM, Indiana Robinson
> <robinson46176 at gmail.com> wrote:
>
>
>  Hi John:
> I never used foam markers but I used to work on foam generators on carpet
> and upholstery cleaners. They used a small screen about like window
> screen.
> The soapy water was sprayed onto the screen and air was blown through the
> wet screen.
> Just tiny versions of Lawrence Welk...  :-)
>
>
>
>
>
> On Sat, Jan 10, 2015 at 8:07 AM, <jtchall at nc.rr.com> wrote:
>
>> COMPLETELY OT POST
>>
>> I know some of you farm full time. How does a foam marker system for a
>> sprayer make foam? From what I can tell looking around on the net the
>> air
>> and liquid foam solution are fed in 2 separate lines to the end of the
>> boom
>> where they mix in some sort of small chamber before being discharged.
>> How
>> does the mixing chamber work? Is the liquid solution fed under pressure
>> from the tank?
>>
>> I've read up on the homemade systems that generate the foam in the tank
>> and have constructed a prototype of that. Unfortunately it appears I
>> have
>> to use rather large pipe to be able to push the foam down the pipe. With
>> long enough hose, you actually build back pressure on the tank using
>> something small like sprayer line. My prototype uses 1 1/2" PVC pipe.
>> Works
>> very well but takes a long time to generate enough foam to start
>> dripping.
>> I also have a concern of how I will switch from one boom to the other.
>> Small solenoids aren't cheap, I haven't priced the size I would need.
>> I've
>> considered using 2 tanks and 2 compressors, would be a lot cheaper than
>> solenoids. To keep from having to wait on the foam due to switching from
>> one tank to the other I could let both run all the time. Another reason
>> I
>> dislike this system is the water in the tank tends to slosh up on the
>> foam,
>> meaning I would need a baffle of some sort in the tank.
>>
>> Any help is appreciated.
>>
>> John Hall
>> _______________________________________________
>> AT mailing list
>> http://www.antique-tractor.com/mailman/listinfo/at
>>
>
>
>
> --
>
>
> Nothing will teach you patience like a horse. Rule #1, the horse is rarely
> wrong...
> If you want to get inside of a horse's head love is the key, not anger or
> impatience and never revenge. Pet it, groom it, feed it, water it; and
> only
> then ask it to work with you as a friend.
>
> Francis Robinson
> aka "farmer"
> Central Indiana USA
> robinson46176 at gmail.com
> _______________________________________________
> AT mailing list
> http://www.antique-tractor.com/mailman/listinfo/at
>
>
>
> _______________________________________________
> AT mailing list
> http://www.antique-tractor.com/mailman/listinfo/at
>


It is good to have work.  It is even better to be *able* to work