MonicaLee
Mechanical
- Jan 3, 2005
- 63
I have previously posted this one in the Pump Forum. I have people advised me to post in this forum. I am trying to redesign the PILOT ADJUSTING NEEDLE.
CURRENT DESIGN: Needle (pin) has a dent cut to allow air (increasing/decreasing the stroking rate) by adjustment of thread from the timer cap. This needle is regulating air supply pressure to eventually inject chemicals mixing at desired stroking rate. We are currently using Teflon O-Ring, with the V-Cut dent, the dent is causing residual stress to Teflon (hard material) to wear out and crack. e.g.
IMPROVED DESIGN: Needle to resign instead of V-Cut dent to regulate air, Taper Needle without V-Cut is introduced. I like to copy the Williams design concept to use Taper Needle and redesign seat to match with new design. Please share your experience with calculation of pressure/stroke rate/tolerances required to support design. I am very interested to know any bright ideas to assist us improving our products. I can even hire you as a consultant if you come up with something brilliant.
I really need some basic calculation like what is the maximum/minimum air flow through opening, stroke rate, etc...Any calculations pertaining to this design would be helpful since I have to show back up calculations. I look forward to hear from you all and appreciate deeply your valuable time for reading this post.
CURRENT DESIGN: Needle (pin) has a dent cut to allow air (increasing/decreasing the stroking rate) by adjustment of thread from the timer cap. This needle is regulating air supply pressure to eventually inject chemicals mixing at desired stroking rate. We are currently using Teflon O-Ring, with the V-Cut dent, the dent is causing residual stress to Teflon (hard material) to wear out and crack. e.g.
IMPROVED DESIGN: Needle to resign instead of V-Cut dent to regulate air, Taper Needle without V-Cut is introduced. I like to copy the Williams design concept to use Taper Needle and redesign seat to match with new design. Please share your experience with calculation of pressure/stroke rate/tolerances required to support design. I am very interested to know any bright ideas to assist us improving our products. I can even hire you as a consultant if you come up with something brilliant.
I really need some basic calculation like what is the maximum/minimum air flow through opening, stroke rate, etc...Any calculations pertaining to this design would be helpful since I have to show back up calculations. I look forward to hear from you all and appreciate deeply your valuable time for reading this post.
