FLUID FLOW CONTROL DEVICE
    8.
    发明公开

    公开(公告)号:EP3970946A3

    公开(公告)日:2022-07-06

    申请号:EP21197228.6

    申请日:2021-09-16

    申请人: Norgren AG

    发明人: Schmid, Daniel

    摘要: A blow moulding device for expanding thermoplastic forms into hollow thermoplastic containers comprises a blow valve piston which is selectively connectable by at least one valve (2) with at least one blowing fluid source for injecting a blow fluid from the blow fluid source into the thermoplastic form. In order to improve down time in-between changes of moulds a flow rate controlling valve (1) is connected in series to the at least one valve. The flow rate controlling valve reduces the flow rate of the blow fluid to a predefined flow rate. The invention proposes to control the predefined flow rate by a control pressure which is applied to a control port of the flow rate control valve.