Active outside the side out of the pump screw driven by a prime mover.
一端伸出泵外的主动螺杆由原动机驱动。
Screw pump screw length is larger because of the job, poor rigidity, easy to cause bending work properly.
螺杆泵因工作螺杆长度较大，刚性较差，容易引起弯曲，造成工作失常。
螺杆与泵体紧密贴合。
Owing to the pump structure and side clearance between screw, it can transport non-lubricative medium.
由于这种泵的结构和螺杆间存在的侧间隙，它可以输送非润滑性介质。
Field application demonstrates that the management level and economic efficiency of the screw pump production system would be improved by using the control chart.
现场应用表明，根据螺杆泵油井工况宏观控制图，可提高螺杆泵采油系统管理水平及经济效益。
Therefore, the pump body and screw cylindrical surface and screw and screw clearance should be as small as possible.
因此，泵体与螺杆外圆表面及螺杆与螺杆间隙应尽可能小些。
There is no internal scale product of dry screw pump owing to the late research starting, so like products are all depend on importing and the price is very expensive.
由于国内螺杆干泵的研究起步较晚，目前还没有规模化的产品，同类产品全部依靠进口，价格十分昂贵。
Screw pump body and at the same time, each other between the screw and screw and form a sealed chamber, ensure airtight, otherwise there may be liquid backflow from the gap.
同时螺杆与泵体、螺杆与螺杆间又相互形成密封腔，保证密闭，否则就可能有液体从间隙中倒流回去。
These research results possess a certain reference value to the design and application of the screw pump.
这些研究结果对地面驱动螺杆泵的设计及应用有一定参考价值。
The main aim in this paper is the basic theory of the three screw pump.
于是在研究中主要是对三螺杆泵做基础理论的研究。
Therefore, the pump with the screw and screw and screw cylindrical surface gap should be as small as possible more.
因此，泵体与螺杆外圆表面及螺杆与螺杆间隙应尽可能小些。
B, single screw pump before adding buffer tank in pipeline, the buffering can store a certain amount of crude oil, and a current limiting device for mixture pumps supply a certain amount of crude oil.
单螺杆泵前管路中增设缓冲罐，在缓冲罐里储存一定量的原油，并用一套限流装置给混输泵供给一定量的原油。
Working with external bearing structure of the double screw pump bearings are separated.
外置轴承结构的双螺杆泵工作腔同轴承是分开的。
Application of the model results show that the effectiveness and accuracy of other oil fields to enhance the efficiency of screw pump well system has a certain significance.
应用结果表明了该模型的有效性和准确性，对提高其他油田螺杆泵井系统效率具有一定的指导意义。
Retention gear pump, motor and foot screws, screw the force should be uniform, reliable connection.
紧固齿轮泵、电动机的地脚螺钉时，螺钉受力应均匀，连接可靠。
Connect hydraulic nut to oil pump and screw in dial gauge.
将液压螺母与油泵连接并用千分表拧紧。
At the same time with the screw pump, screw and screw with each other form a sealed cavity between one another to ensure airtight, otherwise there may be liquid from the gap in the back to go back.
同时螺杆与泵体、螺杆与螺杆间又相互形成密封腔，保证密闭，否则就可能有液体从间隙中倒流回去。
The theories established in this paper give directions to the current design and produce of the three screw pump; and also give solutions of the problems during usage.
本文的基础理论研究对当前的螺杆泵的设计生产都有很好的指导作用，对当前三螺杆泵使用中出现的问题有很好的解决效果。
Screw pump is a kind of rotary pump, when the outlet end is blocked, the pressure will gradually increase, so that more than a predetermined pressure value.
螺杆泵是一种容积式回转泵，当出口端受阻以后，压力会逐渐升高，以至于超过预定的压力值。
And single screw pump in the pump itself cannot set the relief valve, can only be set up in line, increase the investment of equipment cost and installation cost.
而单螺杆泵在泵本身不能设置安全阀，只能在管路中设置，提高了设备投入成本和安装成本。
Similarly, for the twin-screw pump, the fluid viscosity smaller than the viscosity of the liquid leakage is smaller, leakage volume and viscosity of a certain percentage of media relations.
同理，对于双螺杆泵，粘度大的流体比粘度小的液体的泄漏要小，泄漏量与介质粘度有一定的比例关系。
Chongqing industrial park will production centrifugal units, screw units, air-cooled heat pump units consisting mainly of large central air conditioning.
而重庆工业园将生产离心式机组、螺杆式机组、风冷热泵机组为主的大型中央空调。
Screw pump features: the loss of small screw pump, good economic performance.
螺杆泵特点为：螺杆泵损失小，经济性能好。
Double screw pump as a positive displacement pump, the pump suction chamber should be closely separated and discharge chamber inside.
双螺杆泵作为一种容积式泵，泵内吸入室应与排出室严密地隔开。
Double screw pump is a kind of double suction not airtight double screw pump.
双螺杆泵为一种双吸式非密闭的双螺杆泵。
The computing procedure of all profiles design for double screw pump has been.
介绍了双螺杆泵各类型面设计的计算机设计程序。
The twin screw pump is of the properties of less leakage, big displacement and effectivity.
双头螺杆泵比单头螺杆泵工作腔室多，泄漏少，泵的排量大，效率高。
And diaphragm compared to single-screw pump can transport all kinds of mixed impurity containing gas and solid particles or fibers of the media, but also transport all kinds of corrosive substances.
和隔膜泵相比，单螺杆泵可输送各种混合杂质，含有气体及固体颗粒或纤维的介质，也可输送各种腐蚀性物质。
With the piston pump, diaphragm and gear pumps is different is that single-screw pump can be used for pharmaceutical filling and measurement.
与柱塞泵、单螺杆泵及齿轮泵不同的是，单螺杆泵可用于药剂填充和计量。
With the piston pump, diaphragm and gear pumps is different is that single-screw pump can be used for pharmaceutical filling and measurement.
与柱塞泵、单螺杆泵及齿轮泵不同的是，单螺杆泵可用于药剂填充和计量。
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