CN113882808A - A self-cleaning three-blade cutting tool for ground immersion drilling - Google Patents

Abstract

Translated fromChinese

本发明公开了一种地浸钻井用自清洁三刀翼切割刀具，涉及开采设备技术领域，包括上接头、缸套、底筒、控刀杆和刀片，上接头设置于缸套的首端，用于连接钻杆，底筒设置于缸套的尾端，控刀杆活动连接于缸套内部，刀片周向分布于缸套的尾端，缸套的尾端设置有供刀片通过的轴向设置的出刀口，刀片的首端与缸套铰接连接；控刀杆的首端设置有安装槽，安装槽内安装有用于水流加压的节流水嘴，控刀杆内轴向开设有水孔，控刀杆上还周向开设有径向设置的洗刀水孔，洗刀水孔与刀片的刀体内侧相对设置；本发明中的地浸钻井用自清洁三刀翼切割刀具，能够使液流在产生压力推动刀杆下行的同时冲洗刀体内部，在刀体内部形成局部强烈紊流，改善刀具清洁能力。

The invention discloses a self-cleaning three-blade cutting tool for ground immersion drilling, which relates to the technical field of mining equipment. It is used to connect the drill rod. The bottom cylinder is arranged at the tail end of the cylinder liner. The tool control rod is movably connected inside the cylinder liner. The blades are circumferentially distributed at the tail end of the cylinder liner. The tail end of the cylinder sleeve is provided with an axial direction for the blade to pass through The head end of the blade is hingedly connected with the cylinder liner; the head end of the knife control rod is provided with a mounting groove, a throttling water nozzle for water flow pressurization is installed in the installation groove, and a water hole is axially opened in the knife control rod , the knife control rod is also provided with radially arranged knife washing water holes in the circumferential direction, and the knife washing water holes are arranged opposite to the inner side of the knife body of the blade; the self-cleaning three-blade cutting knife for ground immersion drilling in the present invention can make The liquid flow flushes the inside of the cutter body while generating pressure to push the cutter bar downward, forming a local strong turbulent flow inside the cutter body and improving the cleaning ability of the cutter.

Description

Self-cleaning three-blade cutting tool for ground immersion drilling

Technical Field

The invention relates to the technical field of mining equipment, in particular to a self-cleaning three-blade cutting tool for in-situ leaching well drilling.

Background

At present, in recent years, geological exploration and exploitation of sandstone-type uranium ores in China are rapidly developed, a large amount of sandstone-type uranium resources with industrial utilization values are discovered in inner Mongolia, Xinjiang and the like, the total amount of the sandstone-type uranium resources reaches about 35% of the total amount of the uranium ore resources which have been proven in China, and the sandstone-type uranium resources become one of the most important uranium ore industrial types in China. The in-situ leaching uranium mining is used as a main mining method of sandstone uranium ores, the yield of uranium metal accounts for approximately 70% of the total yield of the sandstone uranium ores, and the yield of uranium metal in the in-situ leaching mountain in 2020 years is estimated to account for 90% of the total yield of the sandstone uranium ores. Meanwhile, a plurality of ore deposits for carrying out an in-situ leaching uranium mining test are developed smoothly, and the condition for transferring to industrial production is preliminarily met. Therefore, sandstone uranium ore becomes an important direction for improving the capacity of uranium ore in China, and a foundation is laid for the deep research of various technologies of leaching mining in China.

The well drilling of the ground leaching process is a key link of the ground leaching uranium mining process, the well drilling is the only channel for leaching solution and leaching liquid to enter and exit from an ore bed, the well drilling quality influences the mining cost, the leaching concentration, the leaching efficiency and the underground water pollution condition, the service life of the well drilling determines the recovery rate and the production cost of the ground leaching mine, and even determines the key of ground leaching mining of the ore bed. For example, in the project of uranium extraction by Mongolian Golgi in Xinjiang, the average burial depth of an ore body is 400-. In the second stage of the uranium mining project (second stage), Xinjiang Mongolia Guerjie, the average burial depth of an ore body is 500-550m, 244 extraction wells, 326 injection wells and 30 monitoring wells are required, 600 drilling wells are required, and the drilling project accounts for 66.27% of project construction investment. Along with the increase of the burial depth of the ore body, the proportion of drilling investment to project construction investment is exponentially increased, and the influence of the drilling cost, the quality and the service life on the technical and economic properties of the in-situ leaching uranium mining is larger and larger. Therefore, both domestic and foreign leaching enterprises take the drilling construction technology as the important point of research and development. However, the prior art is still used in the field dip mine drilling engineering, that is, the whole process from open hole drilling to well completion is completed by one drilling machine, and the main problems of completing the field dip drilling in this way include:

(1) device to process mismatch results in wasted power

At present, the ground immersion drilling well basically adopts one set of equipment to complete all operations, but the performance and the power requirements of the equipment required by different stages of the ground immersion drilling well are different, and the adoption of the same equipment inevitably causes low efficiency or power waste. For example, in the drilling stage, a drilling device with higher power is generally needed to increase the drilling speed, but in the subsequent completion stage, the requirement on the operation accuracy of the drilling machine is higher, the requirement on the power is not high, and if the drilling machine with high power is used in the whole process, the waste of the power is necessarily caused. Meanwhile, with continuous deepening of geological exploration in northern areas, a large number of interlayer oxidation zone type sandstone uranium deposits are discovered and explored, but the deposits have the common characteristic of large burial depth, such as the gule uranium deposit in Yili basin of Xinjiang, the depth is more than 600m, the average depth of the inner Mongolia large deposit is more than 700m, and the local depth is 820 m. The earth-immersed mining of these ultra-deep deposits has never been encountered worldwide, as the current saturation of conventional borehole processing equipment exposes the disadvantage of too slow drilling rates in the development of these ultra-deep deposits and ultimately leads directly to higher drilling costs. Therefore, both the whole-course use of a low-power drilling machine and a high-power drilling machine face the problem of high cost, and particularly, the matching of the equipment and the process of the ore deposit with large depth directly influences the mine development cost.

(2) High personnel and equipment cost caused by unsmooth working procedure connection

Currently, the wet well needs to wait for 48 to 72 hours after grouting is completed, and if a traditional one-time well-forming process is adopted, equipment personnel are in a standby state during waiting for setting, which causes labor and equipment cost. The same problem is faced in the well logging process.

(3) The cutting precision and the well completion quality are low

The completion engineering design (determining the cut location, number and length of filter segments, etc.) of a conventional one-shot process is based on the results of a single well log interpretation with the filter only down the section of the seam displayed by the well. The well completion parameters designed according to the single well logging result lack the overall control of the ore body and the underground flow field, and poor connectivity among drill holes is easy to cause.

In order to solve the problems, a secondary well-forming process is adopted to split the traditional ground-immersed drilling project into three independent processes: the drilling engineering, the well completion design and the well construction engineering are combined with the requirements of different technological processes, the model of a drilling machine, the model of a slurry pump, the type of slurry and the like are optimized, and the drilling quality is improved by using a built-in filter technology, a casing cutting technology, a reverse gravel throwing technology and a reverse grouting technology in a matching manner. The secondary well completion process is expected to combine the technologies of built-in filters, reverse gravel filling, reverse grouting and the like on the basis of the conventional drilling equipment and optimize the whole drilling process flow, so that the construction efficiency of the whole ground immersion drilling project is improved.

The secondary well completion technology is a technical system, wherein the most key is to adopt a special cutter to perform hole expansion after primary well completion, cut the casing, the cement sheath and part of stratum and reestablish a seepage passage between the inside of the casing and the stratum. During the cutting process, the cutter can cut PVC plastic casing and cement and stratum, produce a large amount of plastic debris, cement bits and the like, and these debris often deposit in the cutter inside, cause the cutter to be unable to retrieve. Once the cutter cannot be retracted due to the fact that more chips (particularly large PVC plastic chips) are accumulated inside the cutter, the cutter cannot be taken out of the bottom of the well, and the well is scrapped. At present, cutters with three-blade structures commonly used in immersed drilling sites do not have self-cleaning capability, and similar problems are often encountered in practical application.

In summary, it is an urgent need to solve the problem of providing a cutting tool for earth immersion drilling with self-cleaning capability.

Disclosure of Invention

The invention aims to provide a self-cleaning three-blade cutting tool for underground immersion drilling, which solves the problems in the prior art, can flush the inside of a tool body while the liquid flow generates pressure to push a tool bar to move downwards, forms local strong turbulence in the tool body and improves the cleaning capability of the tool.

In order to achieve the purpose, the invention provides the following scheme:

the invention provides a self-cleaning three-blade cutting tool for ground immersion drilling, which comprises an upper connector, a cylinder sleeve, a bottom barrel, a cutter control rod and a blade, wherein the upper connector is arranged at the head end of the cylinder sleeve and is used for connecting a drill rod, the bottom barrel is arranged at the tail end of the cylinder sleeve, the cutter control rod is movably connected inside the cylinder sleeve, the blade is circumferentially distributed at the tail end of the cylinder sleeve, the tail end of the cylinder sleeve is provided with an axially arranged cutter outlet through which the blade passes, and the head end of the blade is hinged with the cylinder sleeve;

the head end of the cutter control rod is provided with an installation groove, a throttling water nozzle for pressurizing water flow is installed in the installation groove, a water hole is axially formed in the cutter control rod, one end of the water hole is communicated with the throttling water nozzle, the other end of the water hole is a hole bottom which is not penetrated, a cutter washing water hole which is radially formed is also circumferentially formed in the cutter control rod, and the cutter washing water hole is opposite to the inner side of the cutter body of the blade; a return spring which can help the cutter control rod to return is sleeved outside the cutter control rod, and a second tooth which is meshed with the first tooth arranged on the inner side of the head end of the blade is further arranged on the cutter control rod; the tail end rod body of accuse cutter arbor stretches into in the end section of thick bamboo, be provided with in the end section of thick bamboo and adjust the governing valve rod of accuse cutter arbor lateral shifting stroke.

Preferably, the upper joint is in threaded connection with the cylinder sleeve, and the head end of the upper joint is provided with an internal thread connected with a drill rod.

Preferably, the inner tail end of the upper joint is provided with a sand filtering baffle.

Preferably, the throttling water nozzle is arranged in the mounting groove through a clamp spring, and an inner water hole of the throttling water nozzle is gradually reduced from the head end to the tail end.

Preferably, a first limit stop is arranged on the outer wall of the head end of the cutter control rod, a second limit stop and a third limit stop are arranged on the inner hole wall of the cylinder sleeve, the second limit stop is arranged at the tail end of the first limit stop, when the cutter control rod slides towards the tail end in the cylinder sleeve, axial limit is realized by limiting the first limit stop by the second limit stop, the third limit stop is arranged at the tail end of the second limit stop, and the head end and the tail end of the reset spring are respectively abutted against the first limit stop and the third limit stop.

Preferably, the number of the blades is three, the cylinder sleeve is provided with three knife outlets respectively opposite to the blades, the cylinder sleeve is provided with three knife washing water holes respectively opposite to the blades, and the knife control rod is provided with three groups of teeth which are respectively meshed with the teeth on the blades.

Preferably, the blade is hinged to the cylinder sleeve by a pin.

Preferably, the inner side of the blade is provided with a composite sheet groove, the blade washing water hole is opposite to the composite sheet groove, and the composite sheet groove is welded with a hard alloy sheet.

Preferably, the bottom cylinder is in threaded connection with the cylinder sleeve, a knife outlet corresponding to the knife outlet is formed in the side wall of the bottom cylinder, and a part of the blade extending into the bottom cylinder enters and exits from the knife outlet on the bottom cylinder.

Preferably, the bottom cylinder is radially provided with an anti-rotation screw for limiting the adjusting valve rod.

Compared with the prior art, the invention has the following beneficial technical effects:

the invention provides a self-cleaning three-blade cutting tool for underground immersion drilling, wherein a water hole is formed in a tool control rod in a cylinder sleeve, and a tool washing water hole which is communicated with the water hole and is opposite to the inner side of a blade is formed in the tool control rod, so that when liquid flow generates pressure to push the tool rod to move downwards, strong turbulence is formed in a space formed by an opened tool body and the tool control rod through water flow sprayed from the tool washing water hole, fragments cannot be accumulated in the space, the self-cleaning purpose of the tool is achieved, and the cleaning capability of the tool is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic structural view of a self-cleaning three-blade cutting tool for the underground immersion drilling of the present invention;

FIG. 2 is a schematic structural diagram of a control knife bar according to the present invention;

FIG. 3 is a schematic view of a blade according to the present invention;

in the figure: 1-upper joint, 2-cylinder sleeve, 3-bottom cylinder, 4-cutter control rod, 5-blade, 6-cutter outlet, 7-mounting groove, 8-throttling water nozzle, 9-water hole, 10-cutter washing water hole, 11-reset spring, 12-tooth I, 13-tooth II, 14-adjusting valve rod, 15-sand filtering baffle, 16-hole clamp spring, 17-limit platform I, 18-limit platform II, 19-limit platform III, 20-pin shaft, 21-composite sheet groove and 22-anti-rotation screw.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention aims to provide a self-cleaning three-blade cutting tool for underground immersion drilling, which aims to solve the problems in the prior art.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

The self-cleaning three-blade cutting tool for the underground immersion drilling in the embodiment is shown in fig. 1-2 and comprises an upper connector 1, acylinder sleeve 2, abottom cylinder 3, a cutter control rod 4 and ablade 5, wherein the upper connector 1 is in threaded connection with the head end of thecylinder sleeve 2, the head end of the upper connector 1 is provided with an internal thread connected with a drill rod, thebottom cylinder 3 is arranged at the tail end of thecylinder sleeve 2, the cutter control rod 4 is movably connected inside thecylinder sleeve 2, theblade 5 is circumferentially distributed at the tail end of thecylinder sleeve 2, the tail end of thecylinder sleeve 2 is provided with an axially arrangedcutter outlet 6 for theblade 5 to pass through, and the head end of theblade 5 is hinged with thecylinder sleeve 2;

the head end of the cutter control rod 4 is provided with an installation groove 7, a throttlingwater nozzle 8 for pressurizing water flow is installed in the installation groove 7, awater hole 9 is axially formed in the cutter control rod 4, one end of thewater hole 9 is communicated with the throttlingwater nozzle 8, the other end of thewater hole 9 is a hole bottom which is not penetrated, a cutterwashing water hole 10 which is radially formed is also circumferentially formed in the cutter control rod 4, and the cutterwashing water hole 10 is oppositely arranged with the inner side of the cutter body of thecutter blade 5; areturn spring 11 capable of assisting the reset of the control cutter rod 4 is sleeved outside the control cutter rod 4, and asecond tooth 13 meshed with afirst tooth 12 arranged on the inner side of the head end of theblade 5 is further arranged on the control cutter rod 4; the tail end rod body of accuse cutter arbor 4 stretches into in the end section ofthick bamboo 3, is provided with the governingvalve rod 14 of adjusting accuse cutter arbor 4 lateral shifting stroke in the end section ofthick bamboo 3.

In this embodiment, the inner end of the upper joint 1 is provided with asand filtering baffle 15, and thesand filtering baffle 15 filters impurities such as sand in water to prevent thewater hole 9 and the cutterwashing water hole 10 from being blocked.

In this embodiment, thewater nozzle 8 is installed in the mounting groove 7 through the hole by thesnap spring 16, and theinner water hole 9 of thewater nozzle 8 is gradually reduced from the head end to the tail end.

In this embodiment, afirst limit stop 17 is arranged on the outer wall of the head end of the cutter control rod 4, asecond limit stop 18 and athird limit stop 19 are arranged on the inner hole wall of thecylinder sleeve 2, thesecond limit stop 18 is arranged at the tail end of thefirst limit stop 17, when the cutter control rod 4 slides towards the tail end in thecylinder sleeve 2, axial limit is realized by thefirst limit stop 17 of thesecond limit stop 18, thethird limit stop 19 is arranged at the tail end of thesecond limit stop 18, and the head end and the tail end of thereset spring 11 are respectively abutted against thefirst limit stop 17 and thethird limit stop 19.

In this embodiment, theblade 5 is hinged to thecylinder sleeve 2 through apin 20, threeblades 5 are provided, threeblade outlets 6 respectively opposite to theblade 5 are provided on thecylinder sleeve 2, three bladewashing water holes 10 respectively opposite to theblade 5 are provided on thecylinder sleeve 2, and three sets ofteeth 13 respectively engaged with theteeth 12 on theblade 5 are provided on the blade control bar 4.

As shown in fig. 3, in order to prevent the turbulent impact of the cleaning tool from damaging the tool, acomposite sheet groove 21 is formed in the inner side of theblade 5, the toolwashing water hole 10 is opposite to thecomposite sheet groove 21, a hard alloy sheet is welded on thecomposite sheet groove 21, and the impact strength of theblade 5 is increased by the hard alloy sheet, so that theblade 5 is not easily damaged.

In the embodiment, thebottom cylinder 3 is in threaded connection with thecylinder sleeve 2, aknife outlet 6 corresponding to theknife outlet 6 is formed in the side wall of thebottom cylinder 3, and a part of theblade 5 extending into thebottom cylinder 3 enters and exits from theknife outlet 6 on thebottom cylinder 3. Ananti-rotation screw 22 for limiting the adjustingvalve rod 14 is radially arranged on thebottom barrel 3, and after the axial position of the adjustingvalve rod 14 is adjusted, theanti-rotation screw 22 is screwed to tightly push the adjustingvalve rod 14 to fasten and limit the adjustingvalve rod 14.

In the embodiment, sealing O-rings are arranged at the joint of the upper joint 1 and thecylinder sleeve 2, between the outer wall of the head end of the cutter control rod 4 and the inner wall of thecylinder sleeve 2, and between the outer wall of the adjustingvalve rod 14 and the inner wall of thebottom cylinder 3.

When the hydraulic cutting machine works, the drilling pump is used for pressurizing, the hydraulic pressure generates pressure through the throttlingwater nozzle 8, the cutter control rod 4 is driven to move downwards in thecylinder sleeve 2, and thecutter blades 5 are pushed to open and then rotate for cutting. After passing through the throttlingwater nozzle 8, liquid flow is sprayed out from a cutterwashing water hole 10 with the diameter of 6mm on the cutter control rod 4, and strong turbulent flow is formed in a space formed by the openedblade 5 and the cutter control rod 4, so that scraps cannot be accumulated in the space, and the aim of self-cleaning of the cutter is fulfilled. After cutting, stopping pressing, and under the action of thereturn spring 11, controlling the cutter rod 4 to move upwards in thecylinder sleeve 2, and finally completing the recovery of the cutter body.

The principle and the implementation mode of the invention are explained by applying specific examples, and the description of the above examples is only used for helping understanding the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In summary, this summary should not be construed to limit the present invention.

Claims (10)

Translated fromChinese

1.一种地浸钻井用自清洁三刀翼切割刀具，其特征在于：包括上接头、缸套、底筒、控刀杆和刀片，所述上接头设置于所述缸套的首端，所述上接头用于连接钻杆，所述底筒设置于所述缸套的尾端，所述控刀杆活动连接于所述缸套内部，所述刀片周向分布于所述缸套的尾端，所述缸套的尾端设置有供所述刀片通过的轴向设置的出刀口，所述刀片的首端与所述缸套铰接连接；1. a self-cleaning three-blade cutting tool for ground immersion drilling, is characterized in that: comprise upper joint, cylinder liner, bottom cylinder, knife control rod and blade, and described upper joint is arranged on the head end of described cylinder liner, The upper joint is used to connect the drill rod, the bottom cylinder is arranged at the tail end of the cylinder liner, the knife control rod is movably connected inside the cylinder liner, and the blades are circumferentially distributed on the cylinder liner. a tail end, the tail end of the cylinder liner is provided with an axially arranged knife outlet for the blade to pass through, and the head end of the blade is hingedly connected to the cylinder liner;所述控刀杆的首端设置有安装槽，所述安装槽内安装有用于水流加压的节流水嘴，所述控刀杆内轴向开设有水孔，所述水孔一端与所述节流水嘴连通，所述水孔另一端为未贯穿的孔底，所述控刀杆上还周向开设有径向设置的洗刀水孔，所述洗刀水孔与所述刀片的刀体内侧相对设置；所述控刀杆的外部套设有能够帮助所述控刀杆复位的复位弹簧，所述控刀杆上还设置有与所述刀片的首端内侧设置的齿一啮合的齿二；所述控刀杆的尾端杆体伸入所述底筒内，所述底筒内设置有调节所述控刀杆横向移动行程的调节阀杆。The head end of the knife control rod is provided with an installation groove, a throttle water nozzle for water flow pressurization is installed in the installation groove, a water hole is axially opened in the knife control rod, and one end of the water hole is connected to the The throttling water nozzle is connected, the other end of the water hole is the bottom of the hole that does not penetrate, and the knife control rod is also provided with a radially arranged knife washing water hole, and the knife washing water hole is connected to the knife of the blade. The inner side of the body is oppositely arranged; the outside of the knife control rod is sleeved with a reset spring that can help the knife control rod to reset, and the knife control rod is also provided with a tooth that meshes with the teeth provided on the inner side of the head end of the blade. Two teeth; the tail end rod body of the knife control rod extends into the bottom cylinder, and a regulating valve rod for adjusting the lateral movement stroke of the knife control rod is arranged in the bottom cylinder.2.根据权利要求1所述的地浸钻井用自清洁三刀翼切割刀具，其特征在于：所述上接头与所述缸套螺纹连接，所述上接头的首端设置连接钻杆的内螺纹。2. The self-cleaning three-blade blade cutting tool for in-situ immersion drilling according to claim 1, wherein the upper joint is threadedly connected to the cylinder liner, and the head end of the upper joint is provided with an inner hole for connecting the drill pipe. thread.3.根据权利要求1所述的地浸钻井用自清洁三刀翼切割刀具，其特征在于：所述上接头的内部尾端安装有滤砂挡板。3 . The self-cleaning three-blade wing cutting tool for in-situ immersion drilling according to claim 1 , wherein a sand filter baffle is installed at the inner rear end of the upper joint. 4 .4.根据权利要求1所述的地浸钻井用自清洁三刀翼切割刀具，其特征在于：所述节流水嘴通过孔用卡簧安装于所述安装槽内，所述节流水嘴的内部水孔由首端到尾端逐渐变小。4 . The self-cleaning three-blade cutting tool for in-situ immersion drilling according to claim 1 , wherein the throttling water nozzle is installed in the installation groove with a circlip through the hole, and the inside of the throttling water nozzle is installed in the installation groove. The water hole gradually becomes smaller from the head end to the tail end.5.根据权利要求1所述的地浸钻井用自清洁三刀翼切割刀具，其特征在于：所述控刀杆的首端外壁上设置有限位台一，所述缸套的内孔壁上设置有限位台二和限位台三，所述限位台二设置于所述限位台一的尾端，当所述控刀杆在所述缸套内向尾端滑动时，通过所述限位台二限位所述限位台一来实现轴向限位，所述限位台三设置于所述限位台二的尾端，所述复位弹簧的首尾端分别与所述限位台一和所述限位台三相抵。5. The self-cleaning three-blade cutting tool for in-situ immersion drilling according to claim 1, characterized in that: a limiting stage 1 is arranged on the outer wall of the head end of the tool control rod, and the inner hole wall of the cylinder liner is The second and third limit platforms are provided, and the second limit platform is arranged at the rear end of the first limit platform. When the tool control rod slides toward the rear end in the cylinder liner, it passes through the limiter. The second position limiter limits the first position limiter to realize the axial limit. The third position limiter is arranged at the rear end of the second position limiter, and the first and last ends of the return spring are respectively connected to the limiter table. One and the three-phase contact of the limit platform.6.根据权利要求1所述的地浸钻井用自清洁三刀翼切割刀具，其特征在于：所述刀片设置有三个，所述缸套上设置有三个与所述刀片分别相对的所述出刀口，所述缸套上设置有三个与所述刀片分别相对的所述洗刀水孔，所述控刀杆上设置有三组与所述刀片上的所述齿一分别啮合的所述齿二。6 . The self-cleaning three-blade blade cutting tool for in-situ immersion drilling according to claim 1 , wherein the blades are provided with three blades, and the cylinder liner is provided with three outlet blades respectively opposite to the blades. 7 . The knife edge, the cylinder sleeve is provided with three water holes for washing the knife which are respectively opposite to the blade, and the knife control rod is provided with three groups of the tooth two meshing with the tooth one on the blade respectively .7.根据权利要求1所述的地浸钻井用自清洁三刀翼切割刀具，其特征在于：所述刀片通过销轴与所述缸套铰接。7 . The self-cleaning three-blade blade cutting tool for in-situ immersion drilling according to claim 1 , wherein the blade is hinged to the cylinder liner through a pin shaft. 8 .8.根据权利要求1所述的地浸钻井用自清洁三刀翼切割刀具，其特征在于：所述刀片的内侧设置有复合片槽，所述洗刀水孔与所述复合片槽相对，所述复合片槽上焊接有硬质合金薄片。8. The self-cleaning three-blade cutting tool for in-situ immersion drilling according to claim 1, wherein the inner side of the blade is provided with a composite sheet groove, and the knife washing water hole is opposite to the composite sheet groove, Cemented carbide thin sheets are welded on the composite sheet grooves.9.根据权利要求1所述的地浸钻井用自清洁三刀翼切割刀具，其特征在于：所述底筒与所述缸套螺纹连接，所述底筒的侧壁上开设有与所述出刀口相对应的出刀口，所述刀片延伸到所述底筒内的一部分由所述底筒上的出刀口进出。9. The self-cleaning three-blade cutting tool for in-situ immersion drilling according to claim 1, wherein the bottom cylinder is threadedly connected to the cylinder liner, and a side wall of the bottom cylinder is provided with a The knife outlet corresponds to the knife outlet, and a part of the blade extending into the bottom barrel is entered and exited by the knife outlet on the bottom barrel.10.根据权利要求1所述的地浸钻井用自清洁三刀翼切割刀具，其特征在于：所述底筒上径向安装有限位所述调节阀杆的防转螺丝。10 . The self-cleaning three-blade blade cutting tool for in-situ immersion drilling according to claim 1 , wherein an anti-rotation screw for limiting the position of the regulating valve rod is radially installed on the bottom cylinder. 11 .

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