Rapid slag discharging structure of rotary excavating drilling bucket

Abstract

The utility model relates to the technical field of rotary excavating drilling bucket rapid slag discharging, and discloses a rotary excavating drilling bucket rapid slag discharging structure which comprises a drilling bucket body, an annular conveying pipe is installed in the drilling bucket body, a columnar conveying pipe is connected to the annular conveying pipe, and the end, away from the annular conveying pipe, of the columnar conveying pipe extends out of the drilling bucket body and is movably connected with a tee joint. The three-way joint is connected with a high-pressure grouting pipe and a high-pressure air inlet pipe, the ends, away from the three-way joint, of the high-pressure grouting pipe and the high-pressure air inlet pipe are connected with a slurry pump and an air compressor correspondingly, and slurry and high-pressure air can be injected into the drilling bucket body through connection of the three-way joint with the high-pressure grouting pipe and the high-pressure air inlet pipe. Muck in the drilling bucket body is impacted through slurry, drilling slag in the drilling bucket body is softened, then the remaining drilling slag on the inner wall of the drilling bucket body is further cleaned through high-pressure gas, operation is simple and feasible, the problem of drilling bucket muck discharging can be rapidly and effectively solved, and the construction efficiency is high and noise is low in the slag discharging process.

Description

Technical Field

[0001] The utility model patent relates to the technical field of rapid slag unloading of rotary drilling buckets, and specifically, to a rapid slag unloading structure of a rotary drilling bucket. Background Art

[0002] During the soil extraction process of rotary drilling pile foundation construction, when encountering clay layers, mudstone or siltstone and other strata, the removed rock and soil are squeezed and stuck to the inner wall of the drill bucket in the rotary drilling bucket, which often leads to difficulty in unloading. The conventional unloading method is to rotate the drill bit clockwise or counterclockwise or to quickly lift or lower the drill bucket to produce shaking. After repeated operations, the soil is discharged from the drill bucket. On the one hand, the conventional unloading method has great damage to the drill rod and drill bucket, and the time consumed for unloading may be several times the drilling time, which is inefficient; on the other hand, the shaking drill bucket during the unloading process makes a lot of noise, which has a great impact on noise-sensitive areas such as nearby residents. Utility Model Content

[0003] The utility model aims to provide a quick slag unloading structure for a rotary drilling bucket, aiming to solve the problem in the prior art that the conventional slag unloading method has great damage to the drill rod and the drill bucket, and the time consumed for slag unloading may reach several times the drilling time, resulting in low efficiency.

[0004] The utility model is realized in that a rotary drilling bucket quick slag unloading structure comprises a drilling bucket main body, an annular conveying pipe is installed in the drilling bucket main body, a columnar conveying pipe is connected to the annular conveying pipe, one end of the columnar conveying pipe away from the annular conveying pipe extends out of the drilling bucket main body and is movably connected to a tee, a high-pressure grouting pipe and a high-pressure air intake pipe are connected to the tee, and the ends of the high-pressure grouting pipe and the high-pressure air intake pipe away from the tee are respectively connected to a mud pump and an air compressor.

[0005] Preferably, a bottom cover of the drill bucket is rotatably mounted on the drill bucket body 1, and the bottom cover of the drill bucket is in an open state when unloading slag.

[0006] Preferably, a plurality of nozzles are provided on the annular conveying pipe.

[0007] Preferably, the plurality of nozzles are distributed on the annular conveying pipe at a distance of 30 to 40 cm between each nozzle.

[0008] Preferably, the inlets of the plurality of nozzles are connected in series with the annular delivery pipe.

[0009] Preferably, an air valve is installed at the connection between the tee and the high-pressure air inlet pipe.

[0010] Preferably, a mud valve is installed at the connection between the tee and the high-pressure grouting pipe.

[0011] Preferably, the columnar conveying pipe needs to be movably connected with the annular conveying pipe before slag unloading, and the connection between the columnar conveying pipe and the annular conveying pipe needs to be disconnected after the slag unloading is completed.

[0012] Preferably, the columnar delivery pipe and the annular delivery pipe are connected by a quick-release structure.

[0013] Preferably, the bottom cover of the drill bucket needs to be in a closed state after the slag unloading is completed.

[0014] Compared with the prior art, the rotary drilling bucket quick slag unloading structure provided by the utility model, when the slag in the drilling bucket body needs to be unloaded, the drilling bucket is first lifted out of the ground, and then the connection between the tee and the high-pressure grouting pipe is ensured to be unblocked, the connection between the tee and the high-pressure air intake pipe is terminated, and the mud pump is turned on to inject high-pressure mud into the drilling bucket body to impact the slag in the drilling bucket body and soften the drill slag therein, so that part of the slag is discharged from the bottom of the opened drilling bucket body, and then the connection between the tee and the high-pressure grouting pipe is terminated, and the connection between the tee and the high-pressure air intake pipe is restored. Connect, turn on the air compressor, and inject compressed air into the drill bucket body. The compressed air further cleans the remaining drill cuttings on the inner wall of the drill bucket body, so that the remaining softened slag is discharged from the bottom of the opened drill bucket, so that the slag in the drill bucket body is cleaned more cleanly. The slag unloading device of this scheme is simple and feasible to operate, and can quickly and effectively solve the problem of unloading slag from the drill bucket. The construction efficiency is high and the noise is low during the slag unloading process. While protecting the drill bucket of the drill rig, the mud on the site can be reused efficiently. At the same time, the efficient and rapid switching of different slag unloading methods makes on-site operations more convenient. In addition, under the premise of softening the slag by the high-pressure grouting body, the high-pressure air avoids the impact of excessive mud softening slag on the on-site environment, which facilitates the timely cleaning and transportation of slag. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the rotary drilling bucket quick slag unloading structure provided by the utility model;

[0016] Figure 2 It is a front cross-sectional structural schematic diagram of the rotary drilling bucket quick slag unloading structure provided by the utility model;

[0017] Figure 3 The utility model discloses a schematic structural diagram of an annular conveying pipe and a nozzle of a rotary drilling bucket quick slag unloading structure.

[0018] Figure 4 The utility model discloses a schematic diagram of the structure of an air valve and a mud valve of a rotary drilling bucket quick slag unloading structure.

[0019] Description of reference numerals:

[0020] 1. Drill bucket body; 2. Drill bucket bottom cover; 3. Annular delivery pipe; 4. Columnar delivery pipe; 5. Tee; 6. High-pressure grouting pipe; 7. High-pressure air intake pipe; 8. Mud pump; 9. Air compressor; 10. Nozzle; 11. Air valve; 12. Mud valve. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0022] The implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0023] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present utility model, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0024] Reference Figure 1-4 As shown, it is a preferred embodiment provided by the utility model.

[0025] The rotary drilling bucket quick slag unloading structure comprises a drilling bucket main body 1, an annular conveying pipe 3 is installed in the drilling bucket main body 1, a columnar conveying pipe 4 is connected to the annular conveying pipe 3, one end of the columnar conveying pipe 4 away from the annular conveying pipe 3 extends out of the drilling bucket main body 1 and is movably connected to a tee 5, a high-pressure grouting pipe 6 and a high-pressure air intake pipe 7 are connected to the tee 5, and the ends of the high-pressure grouting pipe 6 and the high-pressure air intake pipe 7 away from the tee 5 are respectively connected to a mud pump 8 and an air compressor 9.

[0026] When it is necessary to unload the slag in the drill bucket body 1, first lift the drill bucket 1 out of the ground, then ensure that the connection between the tee 5 and the high-pressure grouting pipe 6 is unobstructed, terminate the connection between the tee 5 and the high-pressure air intake pipe 7, start the mud pump 8, and inject high-pressure mud into the drill bucket body 1 to impact the slag in the drill bucket body 1 and soften the drill slag therein, so that part of the slag is discharged from the bottom of the opened drill bucket body 1, then terminate the connection between the tee 5 and the high-pressure grouting pipe 6, restore the connection between the tee 5 and the high-pressure air intake pipe 7, and start the air compressor. 9. Compressed air is injected into the drill bucket body 1. The compressed air further cleans the remaining drill cuttings on the inner wall of the drill bucket body 1, so that the remaining softened slag is discharged from the bottom of the opened drill bucket, so that the slag in the drill bucket body 1 is cleaned more cleanly. The slag unloading device of this scheme is simple and feasible to operate, and can quickly and effectively solve the problem of unloading slag from the drill bucket. The construction efficiency is high and the noise is low during the slag unloading process. While protecting the drill bucket of the drilling rig, the mud on the site can be reused efficiently. At the same time, the efficient and rapid switching of different slag unloading methods makes the on-site operation more convenient. In addition, under the premise of softening the slag by the high-pressure grouting body, the high-pressure air avoids the influence of excessive mud softening slag on the on-site environment, which facilitates the timely cleaning and transportation of the slag.

[0027] Specifically, in this embodiment, a drill bucket bottom cover 2 is rotatably mounted on the drill bucket body 1, and the drill bucket bottom cover 2 is in an open state when unloading slag.

[0028] Since the drill bucket bottom cover 2 is rotatably mounted on the drill bucket body 1, the slag in the drill bucket body 1 can be discharged from the opening between the drill bucket bottom cover 2 and the drill bucket body 1 during slag unloading.

[0029] Specifically, in this embodiment, a plurality of nozzles 10 are provided on the slurry conveying gas pipe 3 .

[0030] By disposing the nozzle 10 , the mud and air in the annular conveying pipe 3 can flush the debris in the drill bucket body 1 through the nozzle 10 .

[0031] Specifically, in this embodiment, a plurality of nozzles 10 are distributed on the annular conveying pipe 3 at a distance of 30 to 40 cm between each nozzle.

[0032] By distributing the nozzles 10 on the annular conveying pipe 3 at intervals of 30 to 40 cm, the debris in the drill bucket body 1 can be flushed all-roundly and evenly, and the flushing efficiency is higher.

[0033] Specifically, in this embodiment, the inlets of the plurality of nozzles 10 are connected in series with the annular delivery pipe 3 .

[0034] Since the inlet of the nozzle 10 is connected in series with the annular conveying pipe 3 , the annular conveying pipe 3 can be connected to the nozzle 10 , so that the slurry and air in the slurry air pipe 3 can flow into the nozzle 10 .

[0035] Specifically, in this embodiment, an air valve 11 is installed at the connection between the three-way connection 5 and the high-pressure air intake pipe 7 .

[0036] By setting the air valve 11 , the three-way valve 5 can be connected to the high-pressure air intake pipe 7 through the air valve 11 , thereby realizing the intake control of the high-pressure air in the three-way valve 5 .

[0037] Specifically, in this embodiment, a mud valve 12 is installed at the connection between the tee 5 and the high-pressure grouting pipe 6 .

[0038] By setting the mud valve 12 , the tee 5 can be connected to the high-pressure grouting pipe 6 through the mud valve 12 , thereby realizing the control of the mud in the tee 5 .

[0039] Specifically, in this embodiment, the columnar conveying pipe 4 needs to be movably connected to the annular conveying pipe 3 before slag unloading, and the connection between the columnar conveying pipe 4 and the annular conveying pipe 3 needs to be disconnected after the slag unloading is completed.

[0040] By controlling the connection state of the columnar conveying pipe 4 and the annular conveying pipe 3, efficient slag unloading is facilitated during slag unloading. When a new round of rotary excavation is started after slag unloading, there will be no inconvenience in the rotary excavation and no damage to the columnar conveying pipe 4 and the annular conveying pipe 3 due to the connection state of the columnar conveying pipe 4 and the annular conveying pipe 3.

[0041] Specifically, in this embodiment, the columnar delivery pipe 4 and the annular delivery pipe 3 are connected by a quick-release structure.

[0042] Since the columnar conveying pipe 4 and the annular conveying pipe 3 are connected by a quick-release structure, the columnar conveying pipe 4 can be quickly connected to or removed from the annular conveying pipe 3, thereby greatly improving the work efficiency.

[0043] Specifically, in this embodiment, the bottom cover 2 of the drill bucket needs to be in a closed state after the slag unloading is completed.

[0044] Since the bottom cover 2 of the drill bucket is in a closed state after the slag is unloaded, the bottom cover 2 of the drill bucket can contact the ground during rotary excavation, thereby performing rotary excavation to obtain soil.

[0045] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rotary drilling bucket quick slag unloading structure, comprising a drilling bucket body, characterized in that: An annular conveying pipe is installed in the drill bucket body, and a columnar conveying pipe is connected to the annular conveying pipe. One end of the columnar conveying pipe away from the annular conveying pipe extends out of the drill bucket body and is movably connected to a tee. The tee is connected to a high-pressure grouting pipe and a high-pressure air intake pipe. The ends of the high-pressure grouting pipe and the high-pressure air intake pipe away from the tee are respectively connected to a mud pump and an air compressor.

2. The rotary drilling bucket quick slag unloading structure according to claim 1, characterized in that: A bottom cover of the drill bucket is rotatably mounted on the drill bucket body, and the bottom cover of the drill bucket is in an open state when unloading slag.

3. The rotary drilling bucket quick slag unloading structure according to claim 1, characterized in that: The annular conveying pipe is provided with a plurality of nozzles.

4. The rotary drilling bucket quick slag unloading structure according to claim 3, characterized in that: The plurality of nozzles are distributed on the annular conveying pipe at a distance of 30 to 40 cm between each nozzle.

5. The rotary drilling bucket quick slag unloading structure according to claim 3, characterized in that: The inlets of the plurality of nozzles are connected in series with the annular delivery pipe.

6. The rotary drilling bucket quick slag unloading structure according to claim 1, characterized in that: An air valve is installed at the connection between the three-way connection and the high-pressure air inlet pipe.

7. The rotary drilling bucket quick slag unloading structure according to claim 1, characterized in that: A mud valve is installed at the connection between the tee and the high-pressure grouting pipe.

8. The rotary drilling bucket quick slag unloading structure according to claim 1, characterized in that: The columnar conveying pipe needs to be movably connected with the annular conveying pipe before slag unloading, and the connection between the columnar conveying pipe and the annular conveying pipe needs to be disconnected after the slag unloading is completed.

9. The rotary drilling bucket quick slag unloading structure according to claim 1, characterized in that: The columnar conveying pipe and the annular conveying pipe are connected by a quick-release structure.

10. The rotary drilling bucket quick slag unloading structure according to claim 2, characterized in that: The bottom cover of the drill bucket needs to be in a closed state after the slag unloading is completed.

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