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灭火器灌装设备的灌装方法有哪些?

发布时间:2026-01-16 09:19

灭火器灌装设备的灌装方法有哪些灭火器灌装设备由于液态物料的物理化学性质的差异,对灌装的要求也不同,液态物料通过储液装置灌装到容器中,原则上经常采用以下方法。

 

1)常压灌装,是指在大气压下,直接依靠被灌装液体的重量流入包装容器的灌装方式。常压灌装的过程如下:1、进排气,即液体物料进入容器,同时排出容器内的空气;2、停止进液,即当容器内的液体物料达到定量要求时,进液自动停止;3、清除残余液体,即清除排气管内的残余液体。

 

2)等压灌装。是利用储液罐上部气室中的压缩空气对包装容器进行充气,使两者的压力接近相等,然后液态物料自重流入包装容器的灌装方法。等压灌装的过程是:1.充气和等压;2.进气和回气;3.停止进液;4.释放压力,即将瓶颈中剩余的压缩气体释放到大气中,避免突然降压

大量起泡影响包装质量和定量精度。

 

3)真空灌装法。它是在低于大气压的条件下进行灌装的一种方法。它有两种基本方法:一种是压力真空式,即使储液罐内部处于常压状态,只有包装容器内部的空气被抽走,形成一定的真空度,液体依靠两个容器之间的压差流入包装容器并完成灌装;另一种是重力真空式,即使储液罐和包装容器处于

接近相同的真空状态,液态物料靠自重流入容器,目前国内经常使用压力真空式,其设备简单可靠,真空灌装的过程是:1、对瓶子进行真空;2、进排气;3、停止进液;4、残液回流,即排气管中的残液通过真空室返回储液罐。

 

4)虹吸灌装,虹吸灌装应用虹吸原理,使液态物料从储液罐通过虹吸管吸入容器内,直至两液位相等,此方法适用于低粘度无气体液态物料的灌装,设备结构简单,但灌装速度低。

 

5)加压灌装。加压灌装是通过机械或气动液压装置控制活塞的往复运动,并降低液体物质从储存缸进入活塞缸的粘度,然后强行进入容器进行灌装。这种方法有时用于含有气体的饮料的灌装。由于它不含胶体物质,形成的泡沫容易消失,所以可以依靠它所具有的气体压力直接灌装到瓶子里,而不需要预先充气,从而大大提高灌装速度。

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