A MINI VALVE FOR LOW PRESSURE APPLICATIONS CORE WITH EMBEDDED SEALING MATERIAL AND A DOUBLE INJECTION METHOD FOR MAKING SAME
    3.
    发明公开
    A MINI VALVE FOR LOW PRESSURE APPLICATIONS CORE WITH EMBEDDED SEALING MATERIAL AND A DOUBLE INJECTION METHOD FOR MAKING SAME 审中-公开
    一种用于低压应用的嵌入式密封材料核心和一种用于制造相同材料的双注射方法

    公开(公告)号:EP3183482A1

    公开(公告)日:2017-06-28

    申请号:EP15775483.9

    申请日:2015-08-18

    发明人: PROTOPAPAS, Panos

    IPC分类号: F16K5/04 B29C45/00

    摘要: The invention in question is a sealing method for injection molded polypropylene plastic valves, allowing simple and safe sealing of the valve in closed, semi-open and open positions without having to manually add the sealing material, as well as the sealing rib related to the method. The type of valve comprises of two parts (see FIG. 1): a) The Valve Body (2) with inlet (7), outlet (8) and a chamber for the Valve Core (1) b) The Valve Core (1), with the handle (4), valve opening (6) and sealing material (3) The invented method is using double injection techniques to shape the polypropylene Valve Core (1) of the valve in the first injection stage and then apply the thermoplastic elastomer sealing material (3) to the surface of the polypropylene Valve Core (1) in the second stage. In this way the Valve Core (1) and the Sealing Material (3) is made as one part in one single process, but with two separate injection stages. The Sealing Material (3) which is adhered to the surface of the Valve Core (1) is creating a sealing barrier where there is interference between the Sealing Material (3) and the Valve Body (2). The actual sealing is made by a protruded Sealing Rib (5) at the edges of the area of the Sealing Material (3). The elastomer Sealing Rib (5), which will seal against the inner surface of the Valve Body (2), is carefully measured to ensure proper sealing in all open/closing stages, while at the same time not adding too much friction between the parts. This way proper sealing is achieved, without having to increase the torque required to open and close the valve.

    摘要翻译: 所讨论的发明是用于注塑聚丙烯塑料阀的密封方法,其允许在闭合,半开放和打开位置中简单且安全地密封阀,而不必手动添加密封材料以及与密封件相关的密封肋 方法。 阀芯类型由两部分组成(见图1):a)阀体(2)带入口(7),出口(8)和阀芯(1)的腔室b)阀芯(1) (4),阀门开口(6)和密封材料(3)。本发明的方法使用双注射技术在第一注射阶段中对阀的聚丙烯阀芯(1)进行成形,然后将热塑性弹性体 在第二阶段将密封材料(3)密封到聚丙烯阀芯(1)的表面。 通过这种方式,阀芯(1)和密封材料(3)在一个单独的过程中被制成一个部件,但是具有两个单独的注入阶段。 粘附到阀芯(1)表面的密封材料(3)在密封材料(3)和阀体(2)之间存在干扰的地方形成密封屏障。 实际密封由密封材料(3)区域边缘处的突出密封肋(5)制成。 仔细测量将密封阀体(2)的内表面的弹性体密封肋(5),以确保在所有打开/关闭阶段中的适当密封,同时不会在部件之间增加太多的摩擦 。 这样可以实现适当的密封,而不必增加打开和关闭阀门所需的扭矩。