Paraffin scraping and collar detecting device of oil pumping rod

Abstract

The invention relates to a paraffin scraping and collar detecting device of an oil pumping rod, which comprises a metal scraping plate, a connecting bolt, a rotating shaft, a tension wheel, a signal cam, a tension spring and a connecting seat, wherein two groups of horizontal holes for installing the rotating shaft are arranged with the same height on the executing sleeve of the connecting seat, the two groups of horizontal holes are symmetrically distributed relative to the axial line of the executing sleeve, the metal scraping plate is fixedly installed on the rotating shaft, an included angle between the metal scraping plate and the axial line of the oil pumping rod is 60-90 degrees in a normal state, a knife edge is arranged at the contact end of the metal scraping plate and the oil pumping rod, the rotating shaft is hermetically installed in the horizontal holes, the tension wheel is fixedly installed at one end of the rotating shaft and tensed by the tension spring to force the metal scraping plate to cling to the oil pumping rod, and the signal cam is fixedly installed at the other end of the rotating shaft. The invention not only can more ideally solve the problem of paraffin removal on the surface of the oil pumping rod, but also can successfully pass through a collar or a centralizer and also can judge whether the collar or the centralizer on the oil pumping rod passes through the metal scraping plate or not through a buzzer.

Description

technical field [0001] The invention relates to a device for lifting and lowering a sucker rod, in particular to a device for cleaning wax deposited on the surface of a sucker rod. Background technique [0002] In oilfield pump inspection operations, it has always been a difficult problem to clean up the wax deposits on the surface of sucker rods. Ordinary rubber oil rings can only scrape off the oil sticking to the sucker rod, but they can’t do anything about the wax on the sucker rod. Because the wax attached to the sucker rod is not only firmly bonded, but also relatively hard, It is impossible to remove wax with rubber rubber, and metal blades must be used to remove wax. At present, manual removal is usually used, which is not only labor-intensive, but also has low removal efficiency. There is an urgent need for a device that can scrape wax on the sucker rod and prompt when the collar or centralizer passes. Contents of the invention [0003] The purpose of the prese...

AI Technical Summary

Problems solved by technology

Ordinary rubber oil rings can only scrape the oil sticking to the sucker rod, but they can’t do anything about the wax on the sucker rod. Because the wax attached to the sucker rod is not only firmly bonded, but also relatively hard, It is impossible to remove wax with rubber rubber, and metal blades must be used to remove wax

At present, manual removal is usually used, which is not only labor-intensive, but also has low removal efficiency

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