Screw screw compressor why to set the value of the motor does not stop, but to close the intake valve
Working principle of intake valve of screw air compressorStart up. The motor starts, the main engine starts running, the intake valve is closed, and the small air inlet is arranged on the valve core. After the compression of oil and gas in oil and gas system pressure by the barrel, up to 3-3.5bar stability.Loading. Motor cm-pvs, control system (pressure switch) will be compared with the actual pressure system when the system pressure below the set pressure, the pressure switch setting by Gandhara pressure, the pressure switch to load solenoid valve (solenoid valve three to three) power to the solenoid valve to open, push open the valve to the intake valve control cylinder servo cylinder gas intake valve open suction through the solenoid valve; pressure relief valve closed at the same time, the machine is no longer empty tank pressure continues to rise to the minimum pressure valve to open air supply. There is a minor problem with loading: the screw air compressor is unable to load
High power air compressor not working area gas emission function, the stop signal from empty too long or long time in system pressure pressure limit, the motor stops, the host stops no longer breathing, internal intake valve check valve closed quickly to ensure no stop spit phenomenon of oil discharge valve of continuous blowdown to external atmospheric pressure.
Unloading. When the pressure rises to the upper limit pressure differential pressure switch, pressure switch sends an electrical signal to three to the electromagnetic valve, the electromagnetic valve is closed to stop the air intake valve servo control cylinder, pressure valve closed intake hole is maintained, the tightly closed weight control check valve can be quickly, at the same time release put the valve open release of oil and gas pressure in the barrel to the basic oil. The air compressor is in no-load operation, and when the electromagnetic valve is continuously lost 20min, the system goes into the empty car for a long time. Uninstall small problem: screw compressor can not be uninstalledRong fu. In order to reduce the load of air compressor in air compressor - empty time loading process, equipped with anti proportional valve, when the pressure reaches the set pressure switch limit reverse proportional valve to reduce supply. Early action servo cylinder, intake valve servo cylinder valve stem thrust reduction in spring force under the action of the valve stem retraction, gas thrust when the balance spring force and cylinder when the stem is in the half open state, to reduce the amount of intake air compressor capacity control implementation.Halt. Stop signal from empty too long or long time in system pressure pressure limit, the motor stops, the host stops no longer breathing, internal intake valve check valve closed quickly to ensure no stop spit phenomenon of oil discharge valve of continuous blowdown to external atmospheric pressure.
