Soil Mixer 2019/Controller: Difference between revisions
Jump to navigation
Jump to search
| Line 16: | Line 16: | ||
==Hydraulic Circuit Simulation== | ==Hydraulic Circuit Simulation== | ||
===12/19/2019 (Getting Better Models)=== | |||
{| | |||
|+style="font-size:150%|'''Cylinder/Motor Circuits with Gear Pump''' | |||
!Series Circuit - 2500PSI Bypass Valve | |||
!Sequence Valve Circuit 1 Open Center Valve | |||
!Sequence Valve Circuit 2 Closed Center Valve | |||
|- | |||
|<html><video width="100%" height="100%" loop controls ><source src="https://github.com/CabbageBreath/CabbageBreath.github.io/raw/master/Soil%20Mixer%202019/Series%202500Psi%20Main%20Bypass%20Valve-1.webm" type="video/webm"></video></html> | |||
|<html><video width="100%" height="100%" loop controls ><source src="https://github.com/CabbageBreath/CabbageBreath.github.io/raw/master/Soil%20Mixer%202019/Sequence%20Valve%20Circuit%201000Psi%20Open%20Center%20Valve-1.webm" type="video/webm"></video></html> | |||
|<html><video width="100%" height="100%" loop controls ><source src="https://github.com/CabbageBreath/CabbageBreath.github.io/raw/master/Soil%20Mixer%202019/Sequence%20Valve%20Circuit%201000Psi-1.webm" type="video/webm"></video></html> | |||
|- | |||
|Motor gets no flow when cylinder bottoms out | |||
|1000PSI Sequence Valve Setting | |||
|1000PSI Sequence Valve Setting | |||
|} | |||
===12/18/2019 (Lesser Quality Models)=== | ===12/18/2019 (Lesser Quality Models)=== | ||
Using demo version of FluidSIM | Using demo version of FluidSIM | ||
Revision as of 15:52, 19 December 2019
This page includes information about the entire electromechanical hydraulic control system for the soil mixer. This is a variant of CEB Press Controller v19.01
Controller Requirements
- Needs to switch a double acting cylinder while running a hydraulic motor
- Needs to cycle a dc motor for cement dosing
- Water mister solenoid
Hydraulics
Hydraulic Diagram
Hydraulic Circuit Simulation
12/19/2019 (Getting Better Models)
| Series Circuit - 2500PSI Bypass Valve | Sequence Valve Circuit 1 Open Center Valve | Sequence Valve Circuit 2 Closed Center Valve |
|---|---|---|
| Motor gets no flow when cylinder bottoms out | 1000PSI Sequence Valve Setting | 1000PSI Sequence Valve Setting |
12/18/2019 (Lesser Quality Models)
Using demo version of FluidSIM
| Series Circuit with three way flow controller on motor | With flow (q) and pressure (p) during the simulation |
|---|---|
| Using a pressure relief valve in the simulator as a sequence valve. | Outlet from cylinder valve is plumbed through a check valve to motor. | ||
|---|---|---|---|
| high pressure remains at the pump outlet throughout simulation. something must be missing from the system or the valves aren't set right. | Increases motor flow during retraction of cylinder. Interesting effect- I didn't expect it. This circuit isn't great because pump outlet pressure is constantly above 2700psi. |
In both the above videos the setting of the two pressure relief valves changes motor speed and cylinder travel speed. I try to set it to minimize flow through main bypass valve.