12 sets of two to three metal tubes were connected to the polythene hose through sets of valves at regular intervals 該膠喉管并每隔一段距離透過氣閥連接共十二組二至三枝短金屬管。
First , it is compressible and cushiony ; second , it can be transported to a long distance with a little power loss ; the last , its flux and velocity of flow are quite high , so the reaction time of the operators can been considerably shortened . aiming to solve the problems of vibrating machinery such as short life - span , poor cushion and high energy consumption , the writer , on the basis of characteristic of pneumatic mentioned , contrives a set of valve controlled pneumatic vibrator , which has larger output vibrating force and longer life - span with simple structure . then , it is applied to drive a vibrating screen and the result is fairly well 文中針對氣動技術(shù)本身的特性及優(yōu)點,如:可壓縮,具有緩沖性;能耗損失小,便于遠距離輸送;流量大、流速高,執(zhí)行元件響應(yīng)速度快等,以解決振動機械在應(yīng)用過程中的緩沖、能耗以及使用壽命等問題為目的,設(shè)計出一套輸出激振力大、結(jié)構(gòu)簡單、使用可靠的閥控氣動激振器,并將其成功地運用到振動篩上,取得了較好的效果。