timing screw

In order to solve above problems, a frequency conversion timing unit for screw pump well and an automatic control system were developed.

该系统可准确、实时地监控螺杆泵井的扭矩、转速等工况参数，并对螺杆泵井实施变频调速和自动控制。

Aimed at the problems that sucker rods of the ground drive screw pump break and collars thread off frequently, the frequency conversion timing equipment of screw pump wells and the automatic control system are developed.

针对地面驱动螺杆泵抽油杆断、脱频繁，单井提液调参难以控制等问题，开发了螺杆泵井的变频调速装置及自动控制系统。

This paper discusses emphatically the key problems with the theory and design of the high speed timing screw.

本文着重阐述高速分件供送螺杆装置的有关理论与设计的一些关键性问题。

The Theory and Design of The High Speed Timing Screw

高速分件供送螺杆装置的理论与设计

A New Development of the System Research On the High Speed Timing Screw

高速定时分件供送螺杆系统研究新进展&变螺距螺旋线设计新方法初探

A Research on the General Application of the High Speed Timing Screw Used in Conveying for Various Types of Bottles and Cans

异形瓶罐定时分件供送螺杆通用性的研究