Digital intelligent long spiral cluster controllable double jet drill bit

Abstract

The utility model relates to drill bit technical field discloses a kind of digital intelligent long spiral cluster controllable double spray drill bits, including composite anti-seepage wall, the middle part of the composite anti-seepage wall is equidistantly equipped with multiple sequence piles, the outside of the sequence pile is equipped with spiral stirring drill rod, the outside of the spiral stirring drill rod is fixedly connected with stirring spiral blade, the front middle part of the spiral stirring drill rod is equipped with ultrasonic sensor, the outside bottom of the stirring spiral blade is equipped with mounting blade, the top of the spiral stirring drill rod is equipped with mounting head. In the utility model, power head drives spiral stirring drill rod and double spray drill bit synchronous rotation, drilling is arranged in cross with A, B two sequence piles, after A type pile is drilled to wall bottom, inject low-pressure cement slurry, gas and promote into pile, B type pile is drilled to wall bottom, start high-pressure pump, spray high-pressure slurry, adjust direction after static spiral spray, repeat injection with swing angle when promoting, break through soil layer and form composite anti-seepage wall.

Description

Technical Field

[0001] This utility model relates to the field of drill bit technology, and in particular to a digital intelligent long spiral cluster controllable dual-jet drill bit. Background Technology

[0002] In the field of engineering drilling, the digital intelligent long spiral cluster controllable dual-jet drill bit is an innovative tool that integrates digital intelligent technology. It can precisely control operating parameters, the long spiral structure facilitates efficient drilling, the cluster design enhances the stability and drilling efficiency of the drill bit, and the controllable dual-jet system can spray specific media as needed to assist in breaking up rock and soil, wall protection, or slag removal. This drill bit can adapt to complex geological conditions and significantly improve the accuracy, efficiency, and quality of drilling operations, playing an important role in many engineering scenarios such as building foundation construction and mineral exploration.

[0003] A search revealed Chinese Patent Publication No. CN213836633U, which discloses a multi-purpose drill bit for underground grouting pile construction in the field of geotechnical construction machinery and equipment. The drill bit includes a back-suction section, an upper cutting water section, a slurry return section, a transition section, a slurry outlet section, and a lower cutting water section, which are sequentially connected by bolts to form the multi-purpose drill bit. The key feature is that the multi-purpose drill bit can be used in both RJP and MJS construction processes. The end face of the back-suction section is provided with a main slurry air hole, a main slurry hole, a slurry return hole, an upper cutting water hole, a back-suction air hole, a shared hole for both back-suction and lower cutting water holes, and a data cable hole. The main slurry vent, main slurry hole, return slurry hole, upper cutting water hole, back suction vent, shared hole for back suction and lower cutting water, and data line hole are all connected to the corresponding process pipes inside the drill bit. This utility model has the advantages of sharing a drill bit for RJP and MJS processes, having dual main slurry nozzles and an angled spraying method suitable for large flow and large pile diameter construction methods, controllable pile diameter, and good pile formation effect. However, the existing long spiral bundle controllable high-pressure jet anti-seepage wall technology uses a single-sided multi-nozzle long spiral drill bit to integrate high-pressure fluid into a nearly parallel jet in the same direction, spraying it unidirectionally in the direction of the preceding hole, resulting in generally low construction efficiency. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a digital intelligent long spiral cluster controllable dual-jet drill bit, which aims to improve the existing long spiral cluster controllable high-pressure jet anti-seepage wall technology. The long spiral drill bit adopts multiple nozzles on one side to integrate high-pressure fluid into a nearly parallel jet in the same direction, spraying it unidirectionally in the direction of the preceding hole, which results in general construction efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a digital intelligent long spiral cluster controllable dual-jet drill bit, comprising a composite anti-seepage wall, wherein multiple sequential piles are equidistantly installed in the middle of the composite anti-seepage wall, a spiral stirring drill rod is installed on the outer side of the sequential piles, a stirring spiral blade is fixedly connected to the outer side of the spiral stirring drill rod, an ultrasonic sensor is installed in the middle of the front side of the spiral stirring drill rod, and an installation blade is installed at the bottom of the outer side of the stirring spiral blade.

[0006] The above technical solution involves a long spiral cluster controllable high-pressure jetting anti-seepage wall drilling rig. The power head drives the spiral mixing drill rod and the double jetting drill bit to rotate synchronously. The drilling is divided into two sequences, A and B, with piles arranged in an alternating pattern. After drilling the A-type pile to the bottom of the wall, low-pressure cement slurry and air are injected and the pile is lifted. After drilling the B-type pile to the bottom of the wall, the high-pressure pump is started and high-pressure slurry is sprayed. After static rotary spraying, the direction is adjusted. During lifting, the spraying is repeated at a swing angle to penetrate the soil layer and form a composite anti-seepage wall.

[0007] As a further description of the above technical solution:

[0008] The top of the spiral stirring drill rod is equipped with an installation head, and an installation groove is provided on the outer side of the installation head.

[0009] The above technical solution involves installing an installation head on the spiral mixing drill rod, and installing an installation groove on the installation head.

[0010] As a further description of the above technical solution:

[0011] A low-pressure grouting head is installed at the bottom front side of the spiral mixing drill rod.

[0012] The above technical solution involves installing a low-pressure grouting head on the spiral mixing drill rod.

[0013] As a further description of the above technical solution:

[0014] A mounting plate is fixedly connected to the bottom front end of the spiral stirring drill rod.

[0015] The above technical solution involves installing a mounting plate on the spiral mixing drill rod.

[0016] As a further description of the above technical solution:

[0017] A mounting rod is installed in the middle of the mounting plate.

[0018] The above technical solution involves mounting rods on the mounting plate.

[0019] As a further description of the above technical solution:

[0020] A connecting plate is installed at the bottom of the spiral stirring drill rod.

[0021] The above technical solution involves installing a connecting plate on the spiral stirring drill rod.

[0022] As a further description of the above technical solution:

[0023] Multiple high-pressure spray guide pipes are installed at equal intervals on both the bottom of the stirring spiral blades and the bottom of the connecting plate, and nozzles are installed at the bottom of each of the multiple high-pressure spray guide pipes.

[0024] The above technical solution involves installing a high-pressure slurry guide pipe on the stirring spiral blades, and installing a nozzle on the high-pressure slurry guide pipe.

[0025] As a further description of the above technical solution:

[0026] Multiple high-pressure jet nozzles / air jets are equidistantly installed on the outer side of the mounting blades.

[0027] The above technical solution involves installing a high-pressure jet nozzle that also serves as an air jet on the blade.

[0028] This utility model has the following beneficial effects:

[0029] In this invention, the power head drives the spiral mixing drill rod and the double-jet drill bit to rotate synchronously. The drilling is carried out in two alternating pile sequences, A and B. After the A-type pile is drilled to the bottom of the wall, low-pressure cement slurry and air are injected and the pile is lifted to form a solid pile. After the B-type pile is drilled to the bottom of the wall, the high-pressure pump is started and high-pressure slurry is sprayed. After static rotary spraying, the direction is adjusted. During lifting, the spraying is repeated at an angle to penetrate the soil layer and form a composite anti-seepage wall. This invention achieves the effects of good wall quality, fast construction efficiency, strong adaptability to the geological environment, and no environmental pollution. Attached Figure Description

[0030] Figure 1 This is a perspective view of a digital intelligent long spiral cluster controllable dual-jet drill bit proposed in this utility model;

[0031] Figure 2 This is a front view of a digital intelligent long spiral cluster controllable dual-jet drill bit proposed in this utility model;

[0032] Figure 3 This is a side view of a digital intelligent long spiral cluster controllable dual-jet drill bit proposed in this utility model;

[0033] Figure 4 This is a bottom view of a digital intelligent long spiral cluster controllable dual-jet drill bit proposed in this utility model;

[0034] Figure 5 This is a top view of a digital intelligent long spiral cluster controllable dual-jet drill bit proposed in this utility model;

[0035] Figure 6This is a partial structural cross-sectional view of a digital intelligent long spiral cluster controllable dual-jet drill bit proposed in this utility model.

[0036] Legend:

[0037] 1. Agitator blades; 2. Ultrasonic sensor; 3. Agitator drill rod; 4. Low-pressure grouting head; 5. High-pressure grouting head / air jet head; 6. Mounting head; 7. Mounting plate; 8. High-pressure grouting guide pipe; 9. Nozzle; 10. Mounting groove; 11. Connecting plate; 12. Mounting rod; 13. Mounting blades; 14. Composite seepage barrier wall; 15. Sequence pile. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] Reference Figure 1 , Figure 2 and Figure 3 An embodiment of this utility model is provided: a digital intelligent long spiral cluster controllable double-jet drill bit, including a composite anti-seepage wall 14, multiple sequence piles 15 are installed at equal intervals in the middle of the composite anti-seepage wall 14, a spiral mixing drill rod 3 is installed on the outside of the sequence piles 15, a mixing spiral blade 1 is fixedly connected to the outside of the spiral mixing drill rod 3, an ultrasonic sensor 2 is installed in the middle of the front side of the spiral mixing drill rod 3, an installation blade 13 is installed at the bottom of the outside of the mixing spiral blade 1, a low-pressure grouting head 4 is installed at the bottom of the front side of the spiral mixing drill rod 3, a connecting plate 11 is installed at the bottom of the spiral mixing drill rod 3, multiple high-pressure grouting guide pipes 8 are installed at equal intervals at the bottom of the mixing spiral blade 1 and the connecting plate 11, nozzles 9 are installed at the bottom of the multiple high-pressure grouting guide pipes 8, and multiple high-pressure grouting heads / air jets 5 are installed at equal intervals on the outside of the installation blade 13;

[0040] Specifically, the power head of the long spiral cluster controllable high-pressure jetting anti-seepage wall drilling rig drives the spiral mixing drill rod 3 to rotate. This drill rod rotates synchronously with the digital intelligent long spiral cluster controllable double-jetting drill bit. During the downward drilling process, the low-pressure mud pump and air compressor are started, and the low-pressure grouting single-channel pipeline and the gas two-channel pipeline are opened. The low-pressure grouting single-channel pipeline injects low-pressure cement slurry into the loosened stratum material through the low-pressure grouting head 4 and mixes it thoroughly. The gas generated by the air compressor enters the high-pressure jetting guide pipe 8 and the high-pressure jetting head / air jetting head 5 through the gas pipeline. During the drilling process, low-pressure gas is continuously injected to prevent the mixed cement slurry from flowing back into the high-pressure jetting pipeline and gas pipeline, thereby avoiding pipeline blockage. The drilling is divided into two types, A and B, with piles 15 arranged in a cross-interval manner. After the A-type pile is drilled to the bottom elevation of the wall, it continues to rotate and injects grout through the low-pressure grouting single-channel pipeline and the gas two-channel pipeline. Low-pressure cement slurry and air are introduced, and the drill bit and spiral mixing drill rod 3 are raised at a uniform speed until the ground is formed into sequence pile 15. After the B-type pile is drilled to the bottom elevation of the wall, the high-pressure mud pump and ultrasonic sensor 2 are started, and the high-pressure grouting two-channel pipeline is opened. High-pressure cement slurry is sprayed through the clustered high-pressure grouting head. After static rotary spraying at the bottom of sequence pile 15 for a few minutes, the direction of the drill bit is adjusted so that the high-pressure clustered grouting heads on the front and rear sides are respectively facing the front and rear A-type piles. The spiral mixing drill rod 3 and drill bit are slowly raised, and high-pressure spraying is repeated at a 15-degree swing angle to cut the weak soil layer that has been loosened in advance between the two holes of A and B type piles, so that the stratum between the two holes is completely penetrated. The broken stratum material is fully mixed with cement slurry to form a composite anti-seepage wall 14. The selection of the lifting speed parameters of the spiral mixing drill rod 3 and drill bit can be determined by the stratum resistance through a simple initial test spray. High-pressure clustered grouting can be carried out again in places with low filling degree in a timely manner, and the lifting speed of the spiral mixing drill rod 3 and drill bit can be adjusted in a timely manner.

[0041] Reference Figure 4 , Figure 5 and Figure 6 The top of the spiral mixing drill rod 3 is equipped with an installation head 6, and an installation groove 10 is provided on the outer side of the installation head 6. An installation plate 7 is fixedly connected to the bottom front side of the spiral mixing drill rod 3, and an installation rod 12 is installed in the middle of the installation plate 7.

[0042] Specifically, the top of the spiral stirring drill rod 3 is provided with a mounting head 6, and the outer edge of the mounting head 6 is provided with a mounting groove 10. In addition, the bottom of the front end of the spiral stirring drill rod 3 is fixedly connected to the mounting plate 7, and the mounting rod 12 is installed at the center of the mounting plate 7.

[0043] Working Principle: The power head of the long spiral cluster controllable high-pressure jetting anti-seepage wall drilling rig drives the spiral mixing drill rod 3 to rotate. The spiral mixing drill rod 3 rotates synchronously with the digital intelligent long spiral cluster controllable double-jetting drill bit. During the downward drilling process, the low-pressure mud pump and air compressor are started, and the low-pressure grouting single-channel pipeline and the gas two-channel pipeline are opened. The low-pressure cement slurry is injected into the loosened stratum material through the low-pressure grouting head 4 through the low-pressure grouting single-channel pipeline and fully mixed. The air compressor generates gas, which enters the high-pressure jetting guide pipe 8 and the high-pressure jetting head / air jetting head 5 after passing through the gas pipeline. During the drilling process, low-pressure gas is continuously sprayed to prevent the mixed cement slurry from flowing back into the high-pressure jetting pipeline and gas pipeline and clogging the pipeline. The drilling is divided into two types, A and B, with piles 15 arranged in a cross-interval manner. See the plan of the digital intelligent long spiral cluster controllable double-jetting anti-seepage wall step sequence. After the type A pile is drilled to the bottom elevation of the wall, it continues to rotate and passes through the low-pressure grouting single-channel pipeline. Low-pressure cement slurry and gas are injected into the two-channel gas pipeline, and the drill bit and spiral mixing drill rod 3 are raised at a uniform speed until the ground is formed into sequence pile 15. After the B-type pile is drilled to the bottom elevation of the wall, the high-pressure mud pump and ultrasonic sensor 2 are started, and the two-channel high-pressure grouting pipeline is opened. High-pressure cement slurry is sprayed through the cluster high-pressure grouting head. After static rotary spraying at the bottom of sequence pile 15 for a few minutes, the drill bit direction is adjusted so that the high-pressure cluster grouting heads on the front and rear sides are respectively facing the front and rear A-type piles. The spiral mixing drill rod 3 and drill bit are slowly raised, and high-pressure spraying is repeated at a 15-degree swing angle to cut the weak soil layer that has been loosened in advance between the two holes of A and B type piles, so that the stratum between the two holes is completely penetrated. The broken stratum material is fully mixed with cement slurry to form a composite anti-seepage wall 14. The selection of the lifting speed parameters of spiral mixing drill rod 3 and drill bit can be determined by simple initial test spraying according to the stratum resistance. High-pressure cluster grouting can be carried out again in places with low filling degree in a timely manner, and the lifting speed of spiral mixing drill rod 3 and drill bit can be adjusted in a timely manner.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A digital intelligent long spiral cluster controllable dual-jet drill bit, comprising a composite anti-seepage wall (14), characterized in that: Multiple sequence piles (15) are installed at equal intervals in the middle of the composite seepage barrier wall (14). A spiral stirring drill rod (3) is installed on the outside of the sequence pile (15). A stirring spiral blade (1) is fixedly connected to the outside of the spiral stirring drill rod (3). An ultrasonic sensor (2) is installed in the middle of the front side of the spiral stirring drill rod (3). An installation blade (13) is installed at the bottom of the outside of the stirring spiral blade (1).

2. The digital intelligent long spiral cluster controllable dual-jet drill bit according to claim 1, characterized in that: The top of the spiral stirring drill rod (3) is equipped with an installation head (6), and an installation groove (10) is provided on the outer side of the installation head (6).

3. The digital intelligent long spiral cluster controllable dual-jet drill bit according to claim 1, characterized in that: A low-pressure grouting head (4) is installed at the bottom front side of the spiral stirring drill rod (3).

4. The digital intelligent long spiral cluster controllable dual-jet drill bit according to claim 1, characterized in that: The front bottom end of the spiral stirring drill rod (3) is fixedly connected to the mounting plate (7).

5. The digital intelligent long spiral cluster controllable dual-jet drill bit according to claim 4, characterized in that: A mounting rod (12) is mounted on the middle of the mounting plate (7).

6. The digital intelligent long spiral cluster controllable dual-jet drill bit according to claim 1, characterized in that: A connecting plate (11) is installed at the bottom of the spiral stirring drill rod (3).

7. The digital intelligent long spiral cluster controllable dual-jet drill bit according to claim 6, characterized in that: Multiple high-pressure slurry guide pipes (8) are installed at equal intervals on the bottom of the stirring spiral blade (1) and the bottom of the connecting plate (11), and nozzles (9) are installed on the bottom of the multiple high-pressure slurry guide pipes (8).

8. The digital intelligent long spiral cluster controllable dual-jet drill bit according to claim 1, characterized in that: Multiple high-pressure jetting heads (5) are equidistantly installed on the outer side of the mounting blade (13).

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