case impeller 中文意思是什麼
case impeller
解釋
裝在外殼內的葉輪-
Under function of impeller with high rotating speed, the used sand will be cast to the wearable junk ring to remove the inert film on surface of the sand via mutual collision and friction between sand and junk ring, impeller and case of machine, sand and sand
工作時舊砂在高速回轉的葉輪作用下，拋向耐磨襯圈，通過砂粒與襯圈葉輪與機盒砂粒與砂粒之間的相互碰撞和摩擦，去除砂粒表面的樹脂惰性膜。 -
To ensure the charging pump working reliably, the following measures should be adopted : ( 1 ) adopting modified circular casing to reduce the radial force of the impeller and decrease the seal clearance ; ( 2 ) using radical ribs on impeller and helical sealing on shaft to realize minor pressure differential ; ( 3 ) using back pressure stuffing box to ensure sealing under small packing force ; ( 4 ) adopting self - lubricant flexible graphite stuffing for absorption of solids entering in the graphite in case of leaking
為確保灌注泵可靠工作，提出改進措施： （ 1 ）採用改型環形泵體降低葉輪的徑向力，減小軸封間隙，抑制泄漏； （ 2 ）採用背葉片降低葉片根部壓頭，獲得微壓，使軸封兩端承受較小壓差； （ 3 ）採用螺旋密封降低軸封兩端壓差，在保持微壓的同時避免出現負壓，密封效果更好； （ 4 ）採用反壓式填料密封結構，在很小的壓緊力下，即可保證密封； （ 5 ）採用具有潤滑功效的柔性石墨填料，即使發生軸封泄漏，進入石墨內部的固相顆粒也將隨著石墨的消耗而被鉆井液吸收。
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