The utility model relates to a screw rubber mold, which comprises a cylindrical barrel body opening, opened along the axial direction of the screw shaft and the matched channel with the cylinder, one end of the channel to open the first injection with mouth, the other end is provided with a glue injection channel second, the channel the middle is provided with a plurality of circumferentially spaced along the mold exhaust port, and set the exhaust port on a filter film. The utility model can mold rubber lining were local injection mold from both sides, while the local exhaust in the mold, thereby reducing the glue injection difficulty, to ensure the quality of the gel, is conducive to improve the uniformity of the rubber lining; at the same time, the filter is disposed in the exhaust port, the filter allows the passage of air and discharged, but dense filter membrane can prevent colloid outflow, it can not only avoid the waste caused the outflow of colloid colloid, also can improve the stability of the pressure inside the mold and screw on screw, enhanced colloidal adhesion ability, improve the quality of the rubber lining.
【技术实现步骤摘要】
本技术涉及螺杆衬胶
,具体指一种螺杆衬胶模具。
技术介绍
螺杆泵是靠相互啮合的螺杆作旋转运动而进行工作的,在螺杆转动过程中,物料会与螺杆、泵体内壁产生一定的摩擦,使螺杆与泵体内壁、螺杆之间的工作表面逐渐磨损,螺杆直径逐渐缩小,泵体的内孔直径逐渐增大。这样,螺杆与螺杆之间、螺杆与泵体内壁之间的间隙会随着二者的逐渐磨损而一点点加大,这就增加了运输物料前进时的泄漏流量,同时,当螺杆泵输送杂质含量较高的液体时,一些较硬的杂质容易将螺杆卡死,从而降低了工作效率。因此,研发一种新的螺杆泵以提高螺杆的抗磨损能力、提高螺杆的密封性能和介质通过能力显得尤为重要。在螺杆上衬胶可在一定程度上提高螺杆泵的耐磨性能,然而,如何高质量地对螺杆泵完成衬胶则是关键问题。现有技术中,一般在对螺杆进行衬胶时,首先是将待衬胶螺杆放入与螺杆表面成一定螺纹形状的长条模具中,胶体在注胶机的作用下,进入模具通道,完全依靠压力和自身的流动充满整个模具通道,然而,由于整个流道较长,胶体沿途受到模具内壁、螺杆外壁的较大摩擦力,难以做到快速、完全地使整个胶体充满流道,导致螺杆表面会出现衬胶不均匀或出现气泡的情况。为了解决这一问题,本专利技术人在申请公布号为CN104791242A的中国专利技术专利申请《一种双螺杆泵及其相应的衬胶螺杆的制备方法》(申请号:CN201510172659.X)中,通过局部注胶、局部排气的方式在很大程度上降低了注胶难度,提高了衬胶质量。但是,经过长期实践,本专利技术人发现,由于在衬胶过程中模具中部的排气口不断排气,模具通道内压力难以提升,注胶难度高,进而导致衬胶不均匀问题。技 ...
【技术保护点】
一种螺杆衬胶模具,包括开合式的圆筒状筒体,该筒体上具有沿轴向开设的与螺杆轴相匹配的通道,其特征在于:所述通道的一端开设有第一注胶口,所述通道的另一端开设有第二注胶口,所述通道中部开有多个沿筒体周向间隔布置的排气口,且各排气口上设置有过滤膜。
【技术特征摘要】
1.一种螺杆衬胶模具,包括开合式的圆筒状筒体,该筒体上具有沿轴向开设的与螺杆轴相匹配的通道,其特征在于:所述通道的一端开设有第一注胶口,所述通道的另一端开设有第二注胶口,所述通道中部开有多个沿筒体周向间隔布置的排气口,且各排气口上设置有过滤膜。2.根据权利要求1所述的螺杆衬胶模具,其特征在于:所述排气口个数为6~10个,所述排气口的直径为0.1~0.3cm。3.根据权利要求2所述的螺杆衬胶模具,其特征在于:所述排气口个数为8个,所述排气口的直径为0....
【专利技术属性】
技术研发人员:竺柏康,尹全林,丁波,朱根民,张仁坤,
申请(专利权)人:浙江海洋大学,
类型:新型
国别省市:浙江;33
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