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| 首页Home＞美国红阀公司气动夹管阀 Red Valve's Air Operated Pinch Valve＞正文Text | 【下一页Next】 |
| 03_app_typeA_bulk | A型夹管阀 - 应用资料 散装物料处理 ♦ 回转式气塞 ♦ A型夹管阀 |
 美国红阀公司 |
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美国红阀公司的Ａ型夹管阀已经被广泛应用来替代回转式气塞进料器。Ａ型夹管阀克服了旋转阀门固有的几个问题，并且更加经济便宜，通径大的阀门这一点特别明显。大通径的旋转气塞要求价格不菲的巨大支撑基座。当处理粉末时，如图所示的两个美国红阀公司安装的夹管阀就能够克服挤压难题。而在这个时候，回转式气塞阀门的阀座就会出现泄露。当塑料粉末进入这些阀门的阀座时，塑料粉末就会被挤压。金属阀门阀座内的压力和温度会使被挤压的塑料粉末形成塑料卷曲物，这令用户很伤脑筋。 Red Valves have been used extensively in lieu of rotary air lock feeders. They overcome several problems of rotary valves and are considerably less expensive, particularly in larger sizes. Large size rotary air locks require huge supports which are costly in themselves. When handling powders, two Red Valves installed as shown overcome problems of extruding. In time, the seats of rotary air lock valves leak. When plastic powder gets in these seats, the powder extrudes. The pressure and heat in the seats of metal valves create plastic curls that are objectionable to customers. 挤压出来的塑料卷曲物在成形后不能再分解。美国红阀公司的夹管阀在处理粉末过程中与粉末的接触很轻柔，因此粉末不会滞留在套管内。也不会被挤压得粘在阀壁上，当气流回收时，阀壁上的黏着物会迅速瓦解破碎并随流体排出。 Extruded plastic curls will not disintegrate after forming. Red Valves gently caress the powder. Should powder become trapped in the sleeve. It will not become compressed enough to bind and will quickly fall apart as it bounces down the air stream. 图示中有两个DN150的美国红阀公司的A型夹管阀，用来从真空贮存罐内排出塑料粉末。定时装置开启上部的阀门持续几分钟，并在两个夹管阀之间灌注贮料罐。 Illustrated are two 6" Red Valve Type A Valves used to discharge plastic powder from a vacuum storage tank. The timer opens the upper valve for several minutes filling the storage chamber between the Red Valves. 时间的延迟使得上面的夹管阀能够有时间赶在下面的夹管阀开启之前关闭。定时装置随后开启下面的夹管阀并持续一段固定的时间，让塑料粉末从中间罐腔中排出。在这个过程中始终保持真空状态。两个美国红阀公司夹管阀加上控制装置的成本远远低于其他控制方案。 A time delay then gives the upper valve a chance to close before the lower valve is opened. The timer then opens the lower valve for a fixed period of time, permitting the - plastic powder to discharge from the intermediate chamber. Vacuum is maintained during this entire sequence. The cost of two Red Valves with control equipment is considerably less than other control methods. |
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