Cleaning system for PDC drill bit

Abstract

The invention relates to a cleaning system for a PDC drill bit. The cleaning system comprises a base, a rotation shaft and a disc. The rotation shaft comprises a fixed shaft and a telescopic shaft. Apair of pin shaft holes are formed in the upper end of the fixed shaft, a plurality of pairs of positioning holes are formed in the lower end of the telescopic shaft, and the fixed shaft and the telescopic shaft are inserted in the pin shaft holes and the positioning holes through bearing pins. The lower end of the fixed shaft and the middle portion of the upper surface of the base are connected,and the upper end of the telescopic shaft is located in a circular groove. A supporting frame is further symmetrically hinged to the two sides of the upper end of the telescopic shaft, and the other end of the supporting frame and the bottom face of the disc are fixedly connected through a lock pin. Three cleaning boxes with the upper surfaces opened are arranged on the upper surface of the disc,water outlet holes are formed in the bottom faces of the cleaning boxes, and water inlet holes are formed in the side faces of the cleaning boxes. The water outlet holes are connected with a water collecting box through a water outlet pipe, and the water inlet holes are connected with a water supply box through a water inlet pipe. The cleaning system has the beneficial effects that the cleaning system can be applicable to cleaning of drill bits different in height, stability of the disc and the rotation shaft is improved, effective water supply can be achieved in the cleaning process, cleaningcontinuity is guaranteed, and accordingly the cleaning efficiency is improved.

Description

technical field [0001] The invention relates to the research field of petroleum machinery and equipment, in particular to a drill bit cleaning device. Background technique [0002] The abbreviation of diamond compact (PDC) drill bit is a drilling tool commonly used in the oil drilling industry. [0003] The performance of PDC products continues to improve. Over the past few years, the quality and type of PDC cutting teeth have changed dramatically. If you compare the teeth of the 1980s with today's teeth, the difference is considerable. Due to the mixing Due to the changes in technology and manufacturing process, the quality and performance of today's cutting teeth are much better, which greatly improves the erosion resistance and impact resistance of the drill bit. [0004] Engineers also optimized the interface between the tungsten carbide substrate and the synthetic diamond to increase the toughness of the cutting teeth. Innovations in layered diamond processing have al...

AI Technical Summary

Problems solved by technology

[0007] In the prior art, because the drill bit has been drilling underground for a long time, there will be a large amount of impurities on the surface after use. If it is not removed, it is easy to accelerate the wear of the drill bit and reduce the service life of the drill bit. Usually, the staff removes the drill bit. Cleaning and then reinstalling is cumbersome and less efficient

[0008] After retrieval, the patent CN204620562U discloses a cleaning system for PDC drill bits, which includes a base, a rotating shaft, and a disk. The base is provided with casters with brakes, and the bottom of the disk is provided with a circular groove. One end of the rotating shaft is connected to the middle of the upper surface of the base, the other end of the rotating shaft is located in the circular groove, the disc can rotate around the rotating shaft, and the upper surface of the disc is provided with: A cleaning box, a second cleaning box, and a third cleaning box, the bottom surfaces of the first cleaning box, the second cleaning box, and the third cleaning box are all provided with drain holes, and the drain holes are connected with drain pipes, and the drain holes The pipe is connected to the water collection tank, the first cleaning tank is equipped with a water gun and an electric cleaning brush, the second cleaning tank is equipped with an ultrasonic cleaning machine, and the third cleaning tank is filled with cleaning fluid, which realizes the use for PDC drill bits The design of the cleaning system is reasonable, the cleaning effect is good, and the technical effect of cleaning efficiency is high; but the cleaning system has the following defects: 1. It is only suitable for cleaning drill bits of a specific height, and cannot be used for cleaning drill bits of different heights. For drills of different heights, a specific drill cleaning system is required, so the cleaning cost is relatively high; 2. Since the disc and the rotating shaft are movably connected, there is no stability between the two, so the roundness cannot be guaranteed. 3. During the cleaning process, the water in each cleaning tank will be continuously drained out through the drain hole and then through the drain pipe, so the water in the cleaning tank will continue to decrease, and the water volume will decrease. After reaching a certain level, it will affect the cleaning effect; furthermore, in order to ensure the cleaning effect, it is necessary to stop the car and add water to each cleaning tank, but this method cannot meet the continuous cleaning, which will affect the cleaning efficiency

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