This drilling adopts crank connecting link and walking beam percussion mechanism, which make the drilling possess two percussive functions, normal drilling takes connecting link impact as main mode, when encountering special situation and the connecting link impact can not drill, it can transform into hoisting impact, the stroke length can be modulated, it realizes automatic percussive drilling due to continuous operating of connecting link percussive mechanism, these can enhance drilling efficiency and relieve labor intensity ; it adopts pumping reverse circulation to drain slag, which not only resolves the drilling difficulty in special stratum such as pebble and gravel stratum and hard stratum, but also resolves the problem that the percussive drill ' s efficiency is low ; it adopts spur gear differential mechanism as double cylinders lazy tongs of main hoist, which not only ensures the balance state of drilling tool, but also reduces the mechanical design, and reduces the cost ; the bottom plate traveling motion of this drilling machine adopts walking type ; the drilling tower adopts hydraulic pressure uprising, and reduces the assistant operating time
該鉆機採用曲柄連桿、游梁式沖擊機構，使鉆機具有兩種沖擊功能;正常鉆進以連桿沖擊為主，遇到特殊情況，用連桿沖擊不能鉆進時，可轉為卷揚沖擊，沖程可調，因連桿沖擊機構連續工作，所以實現了自動沖擊鉆進，可提高鉆進效率，減輕勞動強度;採用
泵吸反循環的方式
排渣，既能有效解決卵礫石地層、堅硬地層等特殊地層鉆進的困難，又很好地解決了沖擊鉆機效率低下的問題;採用直齒圓柱齒輪差速機構作為主卷揚的雙筒同步機構，既保證了鉆具處于平衡狀態，又大大簡化了該機構設計，降低了成本;該鉆機底盤行走移位採用步履式;鉆塔採用液壓起立，減少了輔助作業時間。
Fire water drain pit is provided at side of bottom of each fire elevator well, waste water will be sucked up and drained out by the pumps
在每個消防電梯井底旁設有消防
排水坑，廢水經潛污
泵提升
排至室外
Equally effective in checking back flows from head pressure on the discharge or suction sides of pump
無論是
泵的
排泄口的
排出壓力，還是
泵的吸入口，其流體止回的效果都是相同的。
The same goes for say, a lift pump remover
對于抽揚
泵排除者來說也是這樣。
The model of variability of submergence depth is established based on the law of volume balance, and the changing trends of parameters like submergence depth etc are analyzed. according to the principle of supply and discharge balance, the method to predict oil yield is presented. subject to different objective functions, the corresponding optimum combinations of suction parameters are analyzed, and the importance of choosing objective function to optimum combination of suction parameters is emphasized
本文研究了油井流入動態關系，根據井筒內液量平衡原理，建立了沉沒度變化的數學模型，分析了沉沒度等參數變化規律；根據油井供、
排平衡原則，得出了抽油
泵排量系數相對穩定狀態下產量預測的關系；分析了不同目標函數下，油井抽汲參數的組合效果，指出了目標函數選取對參數合理組合的重要性。
Noggerath gmbh co abwassertechnik kg offer to you special machines and waste water purifying plants in addition also info on sewage pumps
Noggerath gmbh co abwassertechnik kg作為一家靈活的、有經驗的產品供應商為您提供高質量的
排泄
泵、
排水
泵、污水
泵，污水凈化處理、廢水凈化，特種機械。
Install 5 pipe diameters minimum downstream from pump discharge or elbows to avoid flow turbulence. flow straighteners may be required in extreme cases
安裝在距離
泵排泄口或彎管下游至少5倍管道直徑的地方，以避免產生水流擾動。在極端情況下，可能需要流向矯直裝置。
By analyzing the force of the draining base, the choice and the distribution in the bolts in the draining base are determined
通過對
排水底座進行力分析，確定了該潛水
排污
泵排水底座地腳螺栓以及布局方式。
Anhui line electric pump co., ltd. is a sino - us joint venture company which was invested by american anhui development inc. and anhui line electric pump co., ltd.
主要生產各類離心
泵熱水
泵排污
泵熱油
泵化工
泵消防
泵汽車減震器和汽車零部件等20多個系列800多個品種。
Submerged motor pumps
潛水電
泵排污
泵
Emergency works such as digging channels and pumping to drain the floodwater are part of the kcrc s efforts, notwithstanding the fact that the west rail project is not the cause of the flooding
即使水浸並非由西鐵工程引起，但九鐵一直與有關政府部門及民政事務處就有關個案緊密聯系，包括開鑿緊急去水道，使用水
泵排去積水等。
Optimization design and experiment on exhaust heat exchanger of gas engine - driven heat pump
天然氣熱
泵排煙換熱器優化及實驗
The statistics on the measured data in a oil - field shows the submergence depth and discharge coefficient are very low, some key measures for improving discharge coefficient and sucker rod pump performance are presented ; the applications of discharge coefficient to practice are illustrated with examples
通過對某具體油田區塊測試數據分析，指出該區塊油井存在沉沒度、
排量系數低的現象，提出了提高抽油
泵排量系數、改善工作性能的措施。舉例說明了
排量系數計算在生產管理中的應用。
Compressed air pump drainage
壓氣
泵排水
Up at 6 : 00 on the 31st, installed in the mine incidents around the drainage capacity centrifugal pumpsto pump 6, 190 cubic meters / hour, huayuan mine water than the previous highest level fell 44. 55 meters
截至31日6時，安裝在事故礦井周圍的水泵排水能力達到6190立方米/小時，華源煤礦井下水位比此前最高水位下降44 . 55米。
