PRESSURE CONTROL SYSTEM AND MEANS FOR PRESSURE POURING OF CAST STEEL WHEELS

A pressure control system and means for pressure pouring of cast steel wheels, comprising a control system and a main gas circuit, wherein the control system comprises an upper computer, a PLC unit, a sensor, an operation box and an electronic valve, the upper computer is connected via a signal line with the PLC unit which is connected with each of the sensor, the operation box and the electronic valve, the sensor comprises an inside-tank pressure sensor and an inside-mold liquid level detecting sensor, and the electronic valve comprises a quick breaking valve and a servo valve; the main gas circuit comprises a gas pressure bag, a ball valve, a pressure reducing valve, a solenoid valve, and a pressure tank, wherein the gas pressure bag, the ball valve, the pressure reducing valve, the solenoid valve and the pressure tank are connected with one another via gas tubes. The pressure control system for pressure pouring of cast steel wheels is safe, reliable and convenient for operation; it can achieve multi-speed mold filling, that is, it can control the flowing speed in different mold filling stages as required; and it can also conveniently select multiple flowing speeds in combination, so as to adapt to the production of different wheel types.