Update Volume/Hr
I forgot to mention, our goal is to match or come close to bulk truck feed rates which average around 2-3 hr to load 44k LBS. That averages 15-20K per hour. In turn that would be about 10 supersacs per hour. If it is a big savings in regards to HP, PSI, and CFM to cut back a bit that would be ok also as the process is pretty much automated once butterfly valve is set on hopper funnel feed. ■
Re: Pump And Cfm Needs
Dear franzbach,
If the 4” bulk trucks are operating satisfactorily on a 4” line, then a bulk truck compressor could be the right size.
The conveying rate is depending on the pressure and the conveying length.
If you compare these operational data with the bulk truck system, then you have a first idea.
The feeding into the pipeline must be done through rotary valve with rpm control.
(VFD control)
Also check the filter size on the silo and the silo safety valve.
Interlock the silo level with the rotary valve. ■
Teus
Container Unloading
Dear Teus,
I recently joined the forum and was really impressed by the level of knowledge you posses in the pneumatic loading systems. I am working on a project related to silo unloading of soda ash and would be highly grateful for your guidance regarding the same. Can you please share your E-mail so that we can have a detailed discussion?
With best regards,
Abreez
Saint-Gobain ■
Pump and CFM needs
Hello all. I am new to this site and the blog/forum industry. My family owns a manufacture utilizing Polypropylene Plastic Pellets. Usual form of delivery is either bulk box or bulk truck into Silos. With current day trends we are getting more and more in 1000kg sacs. I have built and setup a bag hoist frame with powered trolley to support and raise the bags. It has a collection funnel at bottom with same 4" hookup our bulk delivery trucks use. I then have a 72" flex hose we hook up top the silo feed tubes. Now I am at the point where I need to hookup a motor and pump unit. I had thought would be the easiest part. But many of the drivers make me aware our setup is a bit scary as the run is long and gradual rise. If too much pressure it will angel hair the material, and too little it will plug. Can some one help me understand and calculate the desired pump HP, CFM, and PSI that would supply our needs? It is a 4" pipe. From the ground we have a 4" flex pipe making 90 DEG bend over 3 foot. Then there is an 18 foot straight rise. Then there is a 90 DEG bend over 3 foot which leads to a 140 foot run inclining at 3.5 DEG continuous. Finally there is a 90 DEG bend over 3 ' dropping into our silo. Any help would be appreciative. Thanks for reading. ■